-er -ey a-a a-b a-c aaa aab aac aae aag aak aap aar aay ab- aba abb abc abe abg abk abp abr aby ac- aca acb acc ace acg ack acp acr acy aea aeb aec aee aeg aek aep aer aey ag- aga agb agc age agg agk agp agr agy aka akb akc ake akg akk akp akr ap- apa apb apc ape apg apk app apr apy ar- ara arb arc are arg ark arp arr ary ay- aya ayc aye ayk ayp ayr b-p baa bab bac bae bag bak bap bar bay bba bbb bbc bbe bbg bbk bbp bbr bby bca bcb bcc bce bcg bck bcp bcr bcy be- bea beb bec bee beg bek bep ber bey bga bgb bgc bge bgg bgk bgp bgr bka bkb bkc bke bkg bkk bkp bkr bpa bpb bpc bpe bpg bpp bpr bpy bra brb bre brg brk brp brr bry by- bya byc bye byg byk byp byr c-- caa cab cac cae cag cak cap car cay cba cbb cbc cbe cbg cbk cbp cbr cby cca ccb ccc cce ccg cck ccp ccr ce- cea ceb cec cee ceg cek cep cer cey cga cgb cgc cge cgg cgp cgr cgy cka ckb ckc cky cpa cpb cpc cpe cpg cpk cpp cpr cra crb crc cre crg crk crp crr cry cya cyb cyc cye cyg cyk cyp cyr eaa eab eac eae eag eak eap ear eba ebb ebc ebe ebg ebk ebp ebr eby ec- eca ecb ecc ece ecg eck ecr eea eeb eec eee eeg eek eep eer eey ega egb egc ege egg egp egr egy eka ekb ekc eke ekg ekp ekr eky ep- epa epb epc epe epg epp epr era erb erc ere erg erk erp err ery eya eyc eye eyp eyr g-p gaa gab gac gae gag gak gap gar gay gba gbc gbe gbg gbk gbp gbr gby gca gcb gcc gce gcg gck gcp gcr ge- gea geb gec gee geg gek gep ger gey gga ggb ggc ggg ggp ggr gka gkb gkp gpa gpb gpc gpe gpg gpk gpp gpr gra grb grc gre grg grk grp grr gry gy- gya gyb gye gyp gyr ka- kaa kab kac kae kag kak kap kar kay kba kbb kbc kbe kbk kbp kbr kca kcb kcc kce kcg kck kcp kcr ke- kea keb kec kee keg kek kep ker key kga kgb kgc kgp kgy kkb kkc kke kkk kkp kkr kky kpa kpc kpe kpk kpp kpr kra krc krg krk krp krr kry kya kyc kye kyp kyr p-p paa pab pac pae pag pak pap par pay pba pbb pbc pbe pbg pbk pbp pbr pby pca pcb pcc pce pcg pck pcp pcr pea peb pec pee peg pek pep per pey pga pgb pgc pge pgg pgk pgp pgr pgy pka pkb pkc pke pkg pkp pkr pky ppa ppb ppc ppe ppg ppk ppp ppr pra prb prc pre prg prk prp prr pry py- pya pyb pyc pye pyg pyk pyr ra- raa rab rac rae rag rak rap rar ray rba rbb rbc rbe rbg rbk rbp rbr rca rcb rcc rce rcg rcp rcr re- rea reb rec ree reg rek rep rer rey rga rgb rgc rge rgg rgk rgp rgr rkb rkc rke rkg rkk rkp rky rpa rpb rpc rpe rpg rpk rpp rpr rra rrb rrc rrg rrk rrp rrr ry- rya ryc rye ryg ryk ryr ryy yaa yab yac yae yag yak yap yar yay ybc ybe ybg ybp ybr yby yca ycc yce ycp ycy yea yeb yec yee yeg yek yep yer yey yga ygc yka ykk ypa ypg yra yrc yre yrg yrp yyb yyc yye yyg yyy