a-ii aaaa aaab aaac aaad aaai aaal aaar aaba aabb aabc aabd aabi aabl aaca aacb aacc aacd aaci aacl aacr aada aadc aadi aaib aaic aaii aala aalc aald aali aall aara aarc aard aari abaa abab abac abad abai abal abar abb- abba abbb abbi abbr abca abcb abcc abcd abci abcl abcr abda abdi abia abib abic abid abil abir abla abra abrc abri acaa acab acac acad acai acar acba acbl acca accc accd acci acda acdb acdc acdi aci- acia acic acid acir acla aclc acli aclr acr- acra acrc acri acrr adaa adab adac adad adai adal adar adba adbc adbi adcc adci adda addc addd addi addl addr adia adib adic adir adli adra aiai aiba aibl aica aicc aicd aicr aida aidb aidc aidi aidr aiia aiib aiic aiid aiir aila aild aili aira aird airi alaa alac alad alai alal alar alb- alba albc albi alca alcc ald- alda aldi aldl ali- alia alib alid alii alil alir all- alla alli alll allr arab arac arad arai aral arar arba arbi arc- arca arci arda ardc ardi ardl aria arib arid arii aril arla arli arr- arra arrc arri arrr ba-i baaa baad baal baar baba babb babi babr bac- baca bacc baci bada badb badd badi badr baia baib baic baid bail bair bala balc bald bali ball bar- bara barb barc bard bari barr bbad bbbb bbci bbdd bblb bbrc bcaa bcar bcbc bcca bccc bcci bccl bcda bcia bcra bd-r bdbc bddc bdii biad bial biar biba bibb bibi bibl bica bicc bici bida bidi bidr bila bild bili bill bira birb bird biri birl birr blaa blab blac blad bldc bldr blic blir blrc brab brac brad brai brca brcb brda bria bric brid bril brrr c-cd caaa caab caac caal caba cabi cac- caca cacc caci cacr cada cadc cadd cadi cadr caia caib caic caid cail cair cala calc cald cali call cara carb carc card cari carl carr cbac cbal cbar cbbc cbca cbcc cbcl cbcr cbdb cbdc cbdi cbia cbid cbir cblb cblc cbrd cbrl ccaa ccab ccac ccad ccai ccar ccba ccbc ccca cccb cccc ccci cccl ccdc ccdi ccdr ccic ccid ccii ccil ccir ccla cclc ccli ccra ccrc ccri ccrl cd-r cdaa cdac cdad cdai cdba cdda cddb cddl cddr cdic cdii cdli ciaa cial ciar ciba cibc cibi cica cicc cici cicr cida cidc cidi cidr ciia ciid ciii cila cili cill cira cirb circ ciri cirl cirr clab clad clai clar clcd cldc cldr clib clic clii clir clra clrd clri crab crac crai crar crbc crca crcc crcr crda crdc cria crib cric daab daad daal daar daba dabb daca daci dada dadi daia daid dail dair dala dali dall dara darb darc dard dari darl darr dbar dbcc dcbc dcca dccb dccc dcci dccl dcdb dcia dcii dcil dcli dcra dddd ddlc ddrc dia- diab diac diad dial diar diba dibb dica dici dida didi diii dila dili dill dira dird dirl dirr dlab dlbd dlia dlib dlii dlil draa drab drac drad drar drba drbc drca drda drib dric dril drra iaaa iaac iaai iaal iaba iaca iacc iacr iadb iadc iaia iala iall iara iarc ibac ibad ibar ibca ibia ibid ibra ibrc ibrd ibri icaa icab icac icad icai ical icar icbc icbd icca iccb iccc icci iccl iccr icdc icdd icdl icll iclr icra icrc icrr idad idar idca idcr idda idia idic idid idil idir idli idra idrc iiac iica iicd iida iiii iila iira iirc ilac ilal ilar ilbc ilca ilcd ilia ilic ilir ill- illa illd illi irac irad irai iral irar irca ircc ircd irda irdc iri- iria iric irid iril irla irlb irra irrc irri laaa laac laad laal laar laba labi labr laca lacc laci lacl lada ladd ladi laia laic laid lail lair lala lald lali lall lara larb larc lard lari larr lbar lbcc lbia lblr lcac lcad lcbc lcca lccc lcdd lcdr lcia lcra lcrd lcrl ldci liac liar liba libc libr lica licr lida lidb lidl liia liii liir lila lilb lili lill lira lirc lird liri lirl lirr llcc lldb lldc lllc llll lrac lral lrba lrdd lric lrrc lrrr raab raad raba rabb rabi rabl rac- raca racc raci rada radc radd radl radr raia raic raid raii rail rair rala ralb rall rara rarb rari rbbb rbbr rbcl rcac rcbc rccb rccc rcdc rcic rcid rcrd rdac riaa riab riad riai rial rib- riba rica ricc rida ridc ridd ridi riia rila rill riri rlab rrad rrrr