| Case #1: abcd |
| Case #2: abacac |
| Case #3: IMPOSSIBLE |
| Case #4: IMPOSSIBLE |
| Case #5: abcd |
| Case #6: ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff |
| Case #7: afafafafbfcfdfeffbfbfcfdffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff |
| Case #8: abaccfcccdeefffeffffbbfccbbfbedaffbefcdcfafcfe |
| Case #9: IMPOSSIBLE |
| Case #10: debbafdfacdfeccedfaddfaacfdadeeffeeceabccbdfdabafbceefbabeadffffeabaaebccebbdb |
| Case #11: IMPOSSIBLE |
| Case #12: ececbdbabcdadfecaaeaaecdcfacbdabbfbebdaecdcb |
| Case #13: IMPOSSIBLE |
| Case #14: aecbfaabfbddbaddcadcdcedbcebecefebddbbefbacffaebdacbfaaafbeabbcbaccbbcefddeefbcbceec |
| Case #15: IMPOSSIBLE |
| Case #16: cadebfbecfbdebfcabcbbfbfceadafeecedadec |
| Case #17: IMPOSSIBLE |
| Case #18: ddcbaaacaddadcdbdbebfcaeadaffbecdfcfecfbc |
| Case #19: afeedbfcaabfeababddffddcfbfbdcaeeecf |
| Case #20: aaadfacfefdffdbbefcaccebcccadfeccbbecbbdbecaadfacffaebeacddedcaddbceacdeeffffacdacedcdfbdee |
| Case #21: IMPOSSIBLE |
| Case #22: bcbcbabcacdefebdeaafeecebaebbebbfbadafefaabbccafd |
| Case #23: IMPOSSIBLE |
| Case #24: afffebaafdbebeadfbacadfbfecbefddbacdbaefeddb |
| Case #25: IMPOSSIBLE |
| Case #26: adedfedbddeeacbbfbaadfbfbadfcadbeacffdabd |
| Case #27: IMPOSSIBLE |
| Case #28: dbffabaaabefbccaeddaaefabcbfcefeeefefdababecafecababafaee |
| Case #29: IMPOSSIBLE |
| Case #30: ebfefbbbbedafccbfbcfcdededaaeb |
| Case #31: cbbfbfabfebaafabefabbeddeccfccaabdeccbbfddadfec |
| Case #32: beeefdacdfeacfbdfceecbfdfcbddbbeadfedbdabfecfccabbccedfeebffaadcfeadadcfbcbeeeaf |
| Case #33: IMPOSSIBLE |
| Case #34: addecbcafdfabaffacacfbfcdcaefaffbefefbaafceadedbfefebe |
| Case #35: IMPOSSIBLE |
| Case #36: affbefadfbeafbccdfbbafbdcbaaddadebadabbeaaaeeaeaddaccb |
| Case #37: IMPOSSIBLE |
| Case #38: bafdabecbaacaccaceadaafacdceeaceeebcefcadcaeecba |
| Case #39: IMPOSSIBLE |
| Case #40: afbbfaeadbdecbabeedaaebefeafcebadeddddbaebdebbaceaacdaebfdcbdcfcbaaecaccccffdefaebdeaabfccacfacfeabe |
| Case #41: IMPOSSIBLE |
| Case #42: aaccbceaadddcdeaeafbcfcbddfbbadabfaeaadeeeaeebbaacadeeaeeecfdfafcaedbbffceebabbebedcaeebffdadedbdffb |
| Case #43: cdefaabdaaaaebcfbddefaecdaceeafced |
| Case #44: ffbacbbc |
| Case #45: IMPOSSIBLE |
| Case #46: bbbdcfabbacbcbfcddfcbfbcfbdbaeabadcdddefeffbefdfedddfffcfddfdfdaaeaeaafbdcefedbbaeee |
| Case #47: IMPOSSIBLE |
| Case #48: ccdbdcefeffbfbaebbaffbecceffdaeacded |
| Case #49: IMPOSSIBLE |
| Case #50: eaacceefdefdacfebbbeeedd |
| Case #51: IMPOSSIBLE |
| Case #52: daacfdcdcafaffcbffdcacabdcaacffdbcaadaccbdcfacadadecdcdeecabedddacecabeabadecdceecfebdcafcadbddbbd |
| Case #53: IMPOSSIBLE |
| Case #54: cfbaafcaabdaafaeafffeabbdfdddcbeadba |
| Case #55: IMPOSSIBLE |
| Case #56: ecbfaebfebedbbbdeafacdcdfadeddfacadaafccedbeadebddabeadabdccafcdfbdacacbfabc |
| Case #57: IMPOSSIBLE |
| Case #58: daabacaacfabeebadaadaadaefabdaaecafaaeaebadbdbdeedbffa |
| Case #59: aabcfedcaaffafacadaaaaadaacefaeafaccfadbaaddaabfbdbdbbabcaabbecdebdfbdcceaaecbbdfcafbc |
| Case #60: addaaaeaaaaaaaadfadeaadaafeaaaaecdbabaafdbccaaacdbadbe |
| Case #61: aeaeaaaacbbbfcaaadadcaacadabecbbaccaedfaafdbfafddfcd |
| Case #62: aadebacdbeaacddededbdafbccaeaaccaffcecbabafaddafdeacda |
| Case #63: IMPOSSIBLE |
| Case #64: adfadadadabeadeabaebaeaacabbceacbadacfccbbeafadcdfcafefcdaeafbbadedaaaceeefaecefabbaddeaafafafda |
| Case #65: aaaaaaebacbaaaeadaaeabdceaeaabcaafabadfaeddaaffccfecafffcfefcdecdbbdfadddeedfabeaeec |
| Case #66: adbecbbeeabdaaeefbfefaafefcbceaaaaaadaaa |
| Case #67: adeabdaddaaaacabeadafbdcbcfdedebaacbcceefadcefebbfbe |
| Case #68: aadbdffecbdaadaaaaaaeaadaaaaddaaeafcaebdaabcadfaacafa |
| Case #69: IMPOSSIBLE |
| Case #70: afaeaaaaaacaaaaaeadacbaaaebdedafccaeccaaaffafdfbeefbdfbde |
| Case #71: IMPOSSIBLE |
| Case #72: aadaeacabcaacaaaaafcacabadadefcebdfa |
| Case #73: IMPOSSIBLE |
| Case #74: adadaeaacafecbdaafaadaacaa |
| Case #75: IMPOSSIBLE |
| Case #76: aaeaaaeaaaabcaafcf |
| Case #77: dedcacafccfaedcbaabfaeecbaadfe |
| Case #78: babaeaacaaaaaabeaaaaaaeecaacecccdedfffeef |
| Case #79: aecacbcabcbafddbdabfaadfebedfaea |
| Case #80: baaadceaaaaacabaacbaadbcfffaaaaaabfbadcbacadbceadbafaeafcfdadacfeadaedfcde |
| Case #81: IMPOSSIBLE |
| Case #82: daadaaadacafdabacaaaaacabbbddf |
| Case #83: badacadcaadadfedcddafbadaaadfaefdcdcceadaeedc |
| Case #84: ccaaaaaaacdcdecccaaafcaaaaddabcadaebeaaaaaaaaacaaadabaaaaaaaaacfabfedbaaaaafcafbceeeeeaddbbbaafd |
| Case #85: IMPOSSIBLE |
| Case #86: abaafeaacfafaaaabddae |
| Case #87: fcadacdadbbcaededffaaf |
| Case #88: eafaaaabaaaabaaaeaeaaaaaaaaafaaaaaafaacaaaafafaaffaaaaaaafaafbeceabaaaaacaebadebbadbbaadbaaaebbdbeaa |
| Case #89: facfaabeadaaecabaaaaaffaacacafcaeadaababaefa |
| Case #90: aaabadaaaaaaaaaaaaaaaaaaaaaaaeaaadabaaabcfadaaae |
| Case #91: afeaaacfaaaaaaeabaaeaaabadaaaaefcbbaaeadabaaeaaafbddadcaffbeaeaaafcabafeaeeabcccafcfb |
| Case #92: aaaaaaaaacaaabdaaaaaaaaaaaaabaaacadaaaacfafdbaaaaaafafaaacfeaabaafaaaaaadafb |
| Case #93: adfaaaaaaaefacaabcaaaacdaaaaeacaaeffaaaaddadaaaaaabebbbbcfbeabcdfbda |
| Case #94: aaacaacaaaeaaaaaaadabfd |
| Case #95: addaaaaaaaebacaacaaaaaaaabacfcfeadaf |
| Case #96: aaaaaaaebaaaaaaaabadafafea |
| Case #97: IMPOSSIBLE |
| Case #98: ecaecdaafaccfdcaeacddeaedfdcffbbeffbedaeeaffaac |
| Case #99: IMPOSSIBLE |
| Case #100: fdfeefaaafeccbdddecefbfaaeccffcbbbbe |
| Case #101: IMPOSSIBLE |
| Case #102: ebdafbbcdbfcfabeadfadedcaeebcfbed |
| Case #103: IMPOSSIBLE |
| Case #104: dfecfcbfabbeaaefdddadfbecadaafadcfbcafbefbabcbfebbfddbfaabfeecdfdbaccadbdbacdebcceaaccdb |
| Case #105: IMPOSSIBLE |
| Case #106: eeafbebdeebbcccefedfbaceadbfabaf |
| Case #107: IMPOSSIBLE |
|
|
