-er b-p bbb bbe bbl bbm bbp bbr bbs bbt be- beb bee bel bem bep ber bes bet blb ble bll blm blp blr bls blt bmb bme bml bmm bmp bmr bms bmt bpb bpe bpl bpm bpp bpr bps bpt brb bre brl brm brp brr brs brt bsb bse bsl bsm bsp bsr bss bst btb bte btl btm btp btr bts btt ebb ebe ebl ebm ebp ebr ebs ebt eeb eee eel eem eep eer ees eet elb ele ell elm elp elr els elt em- emb eme eml emm emp emr ems emt ep- epb epe epl epm epp epr eps ept erb ere erl erm erp err ers ert es- esb ese esl esm esp esr ess est etb ete etl etm etp etr ets ett l-p lbb lbe lbl lbm lbp lbr lbs lbt leb lee lel lem lep ler les let llb lle lll llm llp llr lls llt lmb lme lml lmm lmp lmr lms lmt lpb lpe lpl lpm lpp lpr lps lpt lrb lrm lrp lrr lrs lrt lsb lse lsl lsm lsp lsr lss lst ltb lte ltl ltm ltp ltr lts ltt m-r mbb mbe mbl mbm mbp mbr mbs mbt meb mee mel mem mep mer mes met mlb mle mll mlm mlp mlr mls mlt mmb mme mml mmm mmp mmr mms mmt mpb mpe mpl mpm mpp mpr mps mpt mrb mre mrl mrm mrp mrr mrs mrt msb mse msl msm msp msr mss mst mtb mte mtl mtm mtp mtr mts mtt p-p pbb pbe pbl pbm pbp pbr pbs pbt peb pee pel pem pep per pes pet plb ple pll plm plp plr pls plt pmb pme pml pmm pmp pmr pms pmt ppb ppe ppl ppm ppp ppr pps ppt prb pre prl prm prp prr prs prt ps- psb pse psl psm psp psr pss pst pt- ptb pte ptl ptm ptp ptr pts ptt rbb rbe rbl rbm rbp rbr rbs rbt re- reb ree rel rem rep rer res ret rle rll rlm rlp rlr rls rlt rmb rme rml rmm rmp rmr rms rmt rpb rpe rpl rpm rpp rpr rps rpt rrb rrl rrm rrp rrr rrs rrt rsb rse rsl rsm rsp rsr rss rst rtb rte rtl rtm rtp rtr rts rtt sbb sbe sbl sbm sbp sbr sbs sbt se- seb see sel sem sep ser ses set slb sle sll slm slp slr sls slt smb sme sml smm smp smr sms smt spb spe spl spm spp spr sps spt sr- srb sre srl srm srp srr srs srt ss- ssb sse ssl ssm ssp ssr sss sst stb ste stl stm stp str sts stt tbb tbe tbl tbm tbp tbr tbs tbt te- teb tee tel tem tep ter tes tet tle tll tlm tlp tlr tls tlt tmb tme tml tmm tmp tmr tms tmt tpb tpe tpl tpm tpp tpr tps tpt trb tre trl trm trp trr trs trt tsb tse tsl tsm tsp tsr tss tst ttb tte ttl ttm ttp ttr tts ttt