-al -er a-a a-b aaa aab aae aak aal aap aar ab- aba abb abe abk abl abp abr aea aeb aee aek ael aep aer aka akb ake akk akl akp akr al- ala alb ale alk all alp alr ap- apa apb ape apk apl app apr ar- ara arb are ark arl arp arr b-p baa bab bae bak bal bap bar bba bbb bbe bbk bbl bbp bbr be- bea beb bee bek bel bep ber bka bkb bke bkk bkl bkp bkr bla blb ble blk bll blp blr bpa bpb bpe bpl bpp bpr bra brb bre brk brl brp brr eaa eab eae eak eal eap ear eba ebb ebe ebk ebl ebp ebr eea eeb eee eek eel eep eer eka ekb eke ekl ekp ekr ela elb ele elk ell elp elr ep- epa epb epe epl epp epr era erb ere erk erl erp err ka- kaa kab kae kak kal kap kar kba kbb kbe kbk kbl kbp kbr ke- kea keb kee kek kel kep ker kkb kke kkk kkl kkp kkr kl- kla klb klr kpa kpe kpk kpl kpp kpr kra krk krl krp krr l-p la- laa lab lae lak lal lap lar lba lbb lbe lbk lbl lbp lbr lea leb lee lek lel lep ler lka lkb lkl lkp lkr lla llb lle llk lll llp llr lpa lpb lpe lpk lpl lpp lpr lra lrb lrk lrp lrr p-p paa pab pae pak pal pap par pba pbb pbe pbk pbl pbp pbr pea peb pee pek pel pep per pka pkb pke pkl pkp pkr pla plb ple plk pll plp plr ppa ppb ppe ppk ppl ppp ppr pra prb pre prk prl prp prr ra- raa rab rae rak ral rap rar rba rbb rbe rbk rbl rbp rbr re- rea reb ree rek rel rep rer rkb rke rkk rkp rla rle rll rlp rlr rpa rpb rpe rpk rpl rpp rpr rra rrb rrk rrl rrp rrr