-er b-p bbb bbe bbk bbl bbm bbp bbr be- beb bee bek bel bem bep ber bkb bke bkk bkl bkm bkp bkr blb ble blk bll blm blp blr bmb bme bmk bml bmm bmp bmr bpb bpe bpl bpm bpp bpr brb bre brk brl brm brp brr ebb ebe ebk ebl ebm ebp ebr eeb eee eek eel eem eep eer ekb eke ekl ekp ekr elb ele elk ell elm elp elr em- emb eme emk eml emm emp emr ep- epb epe epl epm epp epr erb ere erk erl erm erp err kbb kbe kbk kbl kbm kbp kbr ke- keb kee kek kel kem kep ker kkb kke kkk kkl kkm kkp kkr kl- klb klm klr kmb kme kmk kml kmm kmp kpe kpk kpl kpm kpp kpr krk krl krp krr l-p lbb lbe lbk lbl lbm lbp lbr leb lee lek lel lem lep ler lkb lkl lkp lkr llb lle llk lll llm llp llr lmb lme lmk lml lmm lmp lmr lpb lpe lpk lpl lpm lpp lpr lrb lrk lrm lrp lrr m-r mbb mbe mbk mbl mbm mbp mbr meb mee mek mel mem mep mer mkb mke mkk mkl mkm mkp mkr mlb mle mlk mll mlm mlp mlr mmb mme mmk mml mmm mmp mmr mpb mpe mpk mpl mpm mpp mpr mrb mre mrk mrl mrm mrp mrr p-p pbb pbe pbk pbl pbm pbp pbr peb pee pek pel pem pep per pkb pke pkl pkm pkp pkr plb ple plk pll plm plp plr pmb pme pmk pml pmm pmp pmr ppb ppe ppk ppl ppm ppp ppr prb pre prk prl prm prp prr rbb rbe rbk rbl rbm rbp rbr re- reb ree rek rel rem rep rer rkb rke rkk rkm rkp rle rll rlm rlp rlr rmb rme rml rmm rmp rmr rpb rpe rpk rpl rpm rpp rpr rrb rrk rrl rrm rrp rrr