a-ii aaaa aaab aaac aaai aaal aaap aaba aabb aabc aabi aabl aabp aaca aacb aacc aaci aacl aacp aaib aaic aaii aala aalc aali aall aapa aapc aapi aapl abaa abab abac abai abal abap abb- abba abbb abbi abca abcb abcc abci abcl abcp abia abib abic abil abla abpa abpc abpi abpp acaa acab acac acai acap acba acbl acca accc acci accp aci- acia acic acip acla aclc acli acpa acpi aiai aiba aibl aica aicc aicp aiia aiib aiic aila aili aipa aipi al-p alaa alac alai alal alap alb- alba albc albi alca alcc ali- alia alib alii alil alip all- alla alli alll alpa alpi alpl apac apai apal apap apba apca apcb apcc api- apia apic apip apl- apla aplp appa appc appl ba-i baaa baal baba babb babi bac- baca bacc baci baia baib baic bail bala balc bali ball bapa bapc bapi bapp bbbb bbci bblb bcaa bcap bcbc bcbp bcca bccc bcci bccl bcia bcpl bcpp bial biap biba bibb bibi bibl bica bicc bici bila bili bill bipa bipp blaa blab blac blic blip bpai bpcp caaa caab caac caal caap caba cabi cac- caca cacc caci caia caib caic cail caip cala calc cali call calp capa capb capc capi capp cbac cbal cbbc cbca cbcc cbcl cbcp cbia cblb cblc cbpc cbpp ccaa ccab ccac ccai ccap ccba ccbc ccca cccb cccc ccci cccl cccp ccic ccii ccil ccip ccla cclc ccli ccpa ccpl ccpp ciaa cial ciba cibc cibi cica cicc cici ciia ciii cila cili cill cilp cipa cipp clab clai clap clib clic clii clip clpb clpp cpaa cpac cpap cpbc cpca cpia cpic cplc cppa iaaa iaac iaai iaal iaap iaba iaca iacc iacp iaia iala iall iapa iapp ibac ibca ibia icaa icab icac icai ical icap icbc icbp icca iccb iccc icci iccl iccp icll iclp icpa icpc iiac iica iiii iila iipa ilac ilal ilbc ilca ilia ilic ill- illa illi illp ilpa ipac ipba ipca ipcc ipil ippa ippc laaa laac laal laap laba labi laca lacc laci lacl lacp laia laic lail laip lala lali lall lapa lapb lapc lapi lapp lbcc lbia lcac lcbc lcca lccc lcia lcpa lcpc lcpl liac liba libc lica liia liii lila lilb lili lill lip- lipa lipb lipc lipi lipl lipp llcc lllc llll lpac lpla lppl paal paap paba paca paci paia paib pail paip pala pali pall palp papa papb papi papp pbac pbcc pbil pbpa pcaa pcap pcba pcbc pcca pccc pccl pcia pcip pcll pcpb pcpp piai pial pibb pibi pica picc pici piia piip pil- pila pili pill pipa pipi pipp plaa plab plac plai plap plcc plib plip plpa plpp ppac ppal ppap ppcc ppci ppib ppic ppli pppa pppp