-al a-a a-b a-c aaa aab aac aad aal aan aar ab- aba abb abc abd abl abn abr ac- aca acb acc acd acl acn acr ad- ada adb adc add adl adn adr al- ala alb alc ald all aln alr an- ana anb anc and anl ann anr ar- ara arb arc ard arl arn arr baa bab bac bad bal ban bar bba bbb bbc bbd bbl bbn bbr bca bcb bcc bcd bcl bcn bcr bda bdb bdc bdd bdl bdr bla blb blc bld bll bln blr bna bnb bnc bnd bnl bnn bnr bra brb brd brl brn brr c-- caa cab cac cad cal can car cba cbb cbc cbd cbl cbn cbr cca ccb ccc ccd ccl ccn ccr cda cdb cdc cdd cdl cdn cdr cl- cla clb clc cld cll cln clr cn- cna cnb cnc cnd cnl cnn cnr cra crb crc crd crl crn crr daa dab dac dad dal dan dar dba dbb dbc dbd dbl dbn dbr dca dcb dcc dcd dcl dcn dcr dda ddb ddc ddd ddl ddn ddr dl- dla dlb dlc dld dll dlr dna dnb dnc dnd dnl dnn dnr dra drb drc drd drl drn drr la- laa lab lac lad lal lan lar lba lbb lbc lbd lbl lbr lca lcb lcc lcd lcl lcn lcr lda ldb ldc ldd ldl ldn ldr lla llb llc lld lll lln llr lna lnb lnc lnd lnl lnn lnr lra lrb lrc lrd lrn lrr naa nab nac nad nal nan nar nba nbb nbc nbd nbl nbn nbr nca ncb ncc ncd ncl ncn ncr nda ndb ndc ndd ndl ndn ndr nla nlb nlc nld nll nln nlr nna nnb nnc nnl nnn nra nrb nrc nrd nrl nrn nrr ra- raa rab rac rad ral ran rar rba rbb rbc rbd rbl rbn rbr rca rcb rcc rcd rcl rcn rcr rda rdb rdc rdd rdl rdn rdr rla rlc rld rll rln rlr rna rnb rnc rnd rnn rnr rra rrb rrc rrd rrl rrn rrr

-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

-aaa- -abad -land a-dna aaadc aaarc aabaa aabba aabra aacbc aadac aandr aarna abaab ababa abaca abada abala aball abana abanc aband abann abara abarn abbac abbad abban abbar abcan abccc abcdb abdal abdan abrac abrad abran abrar acaca acacb acadl acala acall acana acar- acara acard accad accra accrd acdnr aclla acrab acral adaba adada adana adanc adara adarn addra adnan adrad adran adrar alaba alaca alada alala alana aland alara alard albac albal alban albar alcan alcra aldan aldda aldra