-al -er a-a a-b a-c aaa aab aac aae aag aak aal aap aar ab- aba abb abc abe abg abk abl abp abr ac- aca acb acc ace acg ack acl acp acr aea aeb aec aee aeg aek ael aep aer ag- aga agb agc age agg agk agl agp agr aka akb akc ake akg akk akl akp akr al- ala alb alc ale alg alk all alp alr ap- apa apb apc ape apg apk apl app apr ar- ara arb arc are arg ark arl arp arr b-p baa bab bac bae bag bak bal bap bar bba bbb bbc bbe bbg bbk bbl bbp bbr bca bcb bcc bce bcg bck bcl bcp bcr be- bea beb bec bee beg bek bel bep ber bga bgb bgc bge bgg bgk bgl bgp bgr bka bkb bkc bke bkg bkk bkl bkp bkr bla blb blc ble blg blk bll blp blr bpa bpb bpc bpe bpg bpl bpp bpr bra brb bre brg brk brl brp brr c-- caa cab cac cae cag cak cal cap car cba cbb cbc cbe cbg cbk cbl cbp cbr cca ccb ccc cce ccg cck ccl ccp ccr ce- cea ceb cec cee ceg cek cel cep cer cga cgb cgc cge cgg cgl cgp cgr cka ckb ckc cl- cla clb clc cle clg clk cll clp clr cpa cpb cpc cpe cpg cpk cpl cpp cpr cra crb crc cre crg crk crl crp crr eaa eab eac eae eag eak eal eap ear eba ebb ebc ebe ebg ebk ebl ebp ebr ec- eca ecb ecc ece ecg eck ecl ecr eea eeb eec eee eeg eek eel eep eer ega egb egc ege egg egl egp egr eka ekb ekc eke ekg ekl ekp ekr ela elb elc ele elg elk ell elp elr ep- epa epb epc epe epg epl epp epr era erb erc ere erg erk erl erp err g-p gaa gab gac gae gag gak gal gap gar gba gbc gbe gbg gbk gbl gbp gbr gca gcb gcc gce gcg gck gcl gcp gcr ge- gea geb gec gee geg gek gel gep ger gga ggb ggc ggg ggp ggr gka gkb gkp gla glb glc gle glg glk gll glp glr gpa gpb gpc gpe gpg gpk gpl gpp gpr gra grb grc gre grg grk grl grp grr ka- kaa kab kac kae kag kak kal kap kar kba kbb kbc kbe kbk kbl kbp kbr kca kcb kcc kce kcg kck kcl kcp kcr ke- kea keb kec kee keg kek kel kep ker kga kgb kgc kgl kgp kkb kkc kke kkk kkl kkp kkr kl- kla klb klc klg klr kpa kpc kpe kpk kpl kpp kpr kra krc krg krk krl krp krr l-p la- laa lab lac lae lag lak lal lap lar lba lbb lbc lbe lbg lbk lbl lbp lbr lca lcb lcc lce lcg lck lcl lcp lcr lea leb lec lee leg lek lel lep ler lga lgb lgc lge lgg lgk lgl lgp lgr lka lkb lkg lkl lkp lkr lla llb llc lle llg llk lll llp llr lpa lpb lpc lpe lpg lpk lpl lpp lpr lra lrb lrc lrg lrk lrp lrr p-p paa pab pac pae pag pak pal pap par pba pbb pbc pbe pbg pbk pbl pbp pbr pca pcb pcc pce pcg pck pcl pcp pcr pea peb pec pee peg pek pel pep per pga pgb pgc pge pgg pgk pgl pgp pgr pka pkb pkc pke pkg pkl pkp pkr pla plb plc ple plg plk pll plp plr ppa ppb ppc ppe ppg ppk ppl ppp ppr pra prb prc pre prg prk prl prp prr ra- raa rab rac rae rag rak ral rap rar rba rbb rbc rbe rbg rbk rbl rbp rbr rca rcb rcc rce rcg rcl rcp rcr re- rea reb rec ree reg rek rel rep rer rga rgb rgc rge rgg rgk rgp rgr rkb rkc rke rkg rkk rkp rla rlc rle rlg rll rlp rlr rpa rpb rpc rpe rpg rpk rpl rpp rpr rra rrb rrc rrg rrk rrl rrp rrr

a-ak a-be aaaa aaab aaac aaae aaal aaap aaar aaba aabb aabc aabl aabp aaca aacb aacc aace aack aacl aacp aacr aaea aaec aaep aage aaka aake aala aalc aale aall aapa aapc aapl aara aarc aare aarp abaa abab abac abae abag abak abal abap abar abb- abba abbb abbe abbr abca abcb abcc abcl abcp abcr abec abee abel aber abgl abla able abpa abpc abpp abpr abra abrc acaa acab acac acae acag acap acar acba acbl acca accc acce accp ace- acea acec acek acel acer acga acgr acke acla aclc acle aclr acpa acpe acpr acr- acra acrc acre acrr aeac aeap aecb aecl aeer aega aeka aela aelc aelp aer- aera aerc agac agag agal agap agar agba agca agcc agce agea agee agel agep ager agga agge agla aglc agle aglp agpl agra agre agrl agrp akaa akae akal akap akar akca akee akeg akel aker akka akle akr- akra akre al-p alaa alac alae alag alak alal alap alar alb- alba albc albe alca alcc alce alea alec alee aleg alek alep aler alg- alga alge alk- alka alkb alke all- alla alle alll allr alpa alpe alpg alpl apac apak apal apap apar apba apbg apbr apca apcb apcc apcr apea apec apeg apel apep aper apga apke apl- apla aple aplp appa appc appl appr apra aprc apre arab arac arae arag arak aral arap arar arba arbe arc- arca arce area arec aree areg arek arel arep arga argb arge arka arke arla arle arpa arpe arpl arr- arra arrc arre arrg arrk arrr baaa baak baal baar baba babb babe babr bac- baca bacc bace back baek bael baer baga bage bagg bak- baka bake bakl bakr bala balc bale balk ball