-ana aaaa aaab aaac aaad aaal aaan aaar aaba aabb aabc aabd aabl aaca aacb aacc aacd aacl aacn aacr aada aadc aala aalc aald aall aana aand aara aarc aard abaa abab abac abad abal aban abar abb- abba abbb abbr abca abcb abcc abcd abcl abcn abcr abda abla abra abrc acaa acab acac acad acan acar acba acbl acca accc accd acda acdb acdc acla aclc aclr acr- acra acrc acrr adaa adab adac adad adal adan adar adba adbc adcc adda addc addd addl addn addr adna adra alaa alac alad alal alan alar alb- alba albc alca alcc ald- alda aldl all- alla alll alln allr alna ana- anaa anab anac anad anal anan anar anba anbb anbl anca ancc and- anda andl andr anla anlc anln anna annb anrc arab arac arad aral aran arar arba arc- arca arda ardc ardl arla arna arnd arr- arra arrc arrr baaa baad baal baan baar baba babb babr bac- baca bacc bacn bada badb badd badr bala balc bald ball bana banc band bann banr bar- bara barb barc bard barn barr bbad bbbb bbdd bblb bbrc bcaa bcar bcbc bcca bccc bccl bcda bcra bd-r bdbc bddc bdna blaa blab blac blad blan bldc bldr blrc bnrr brab brac brad bran brca brcb brda brna brrr c-cd caaa caab caac caal caan caba cac- caca cacc cacr cada cadc cadd cadr cala calc cald call cana canc cand cann cara carb carc card carl carn carr cbac cbal cbar cbbc cbca cbcc cbcl cbcn cbcr cbdb cbdc cbdn cblb cblc cbln cbna cbnd cbrd cbrl cbrn ccaa ccab ccac ccad ccar ccba ccbc ccbn ccca cccb cccc cccl ccdc ccdn ccdr ccla cclc ccna ccnb ccnc ccnr ccra ccrc ccrl cd-r cdaa cdac cdad cdba cdda cddb cddl cddr cdna cdnb cdnc clab clad clan clar clcd cldc cldr clra clrd cnaa cnac cnbc cnbl cnda cndd cnna cnrc cnrr crab crac cran crar crbc crca crcc crcr crda crdc crna d-na daab daad daal daan daar daba dabb daca dada dala dall dana dand danl dann danr dara darb darc dard darl darn darr dbar dbcc dbnl dbrn dcbc dcca dccb dccc dccl dcdb dcra dddd ddlc ddrc dlab dlbd dnaa dnab dnac dnad dnan dnrc draa drab drac drad drar drba drbc drca drda drna drra laaa laac laad laal laan laar laba labr laca lacc lacl lada ladd lala lald lall lan- lana lanc land lann lara larb larc lard larn larr lbar lbcc lblr lcac lcad lcbc lcca lccc lcdd lcdr lcra lcrd lcrl llan llcc lldb lldc lllc llll lncr lndn lrac lral lrba lrdd lrrc lrrr naaa naab naac naad naal naan naar naba nabc nabl naca nacc nacd nacl nada nadc nadr nala nalc nald nall nan- nana nanb nand nann nara narc nard narn narr nbaa nbad nbar nbbc nbca nbcc ncaa ncac ncar ncba ncbc ncca nccc nccn nccr ncda ncdc ncdn ncdr nclc ncln nclr ncna ncnc ncnd ncra ncrc ndaa ndcc nddb ndna ndrc nlab nlcc nlra nlrb nndb nnnn nrab nrca nrdc nrlb nrna nrrc nrrd nrrl raab raad raan raba rabb rabl rac- raca racc rada radc radd radl radr rala ralb rall rana ranc rand rann rara rarb rbbb rbbr rbcl rcac rcbc rccb rccc rcdc rcnl rcnr rcrd rdac rdna rlab rnal rnbr rndc rnld rrad rrna rrrr