-er -ol b-p bbb bbc bbe bbl bbm bbo bbp bbr bbs bbt bcb bcc bce bcl bcm bco bcp bcr bcs bct be- beb bec bee bel bem beo bep ber bes bet blb blc ble bll blm blo blp blr bls blt bmb bmc bme bml bmm bmo bmp bmr bms bmt bob boc boe bol bom boo bop bor bos bot bpb bpc bpe bpl bpm bpo bpp bpr bps bpt brb bre brl brm bro brp brr brs brt bsb bsc bse bsl bsm bso bsp bsr bss bst btb btc bte btl btm bto btp btr bts btt c-- cbb cbc cbe cbl cbm cbo cbp cbr cbs cbt ccb ccc cce ccl ccm cco ccp ccr ccs cct ce- ceb cec cee cel cem ceo cep cer ces cet cl- clb clc cle cll clm clo clp clr cls clt cmb cmc cme cml cmm cmo cmp cmr cms cmt co- cob coc coe col com coo cop cor cos cot cpb cpc cpe cpl cpm cpo cpp cpr cps cpt crb crc cre crl crm cro crp crr crs crt csb csc cse csl csm cso csp csr css cst ctb ctc cte ctl ctm cto ctp ctr cts ctt ebb ebc ebe ebl ebm ebo ebp ebr ebs ebt ec- ecb ecc ece ecl ecm eco ecr ecs ect eeb eec eee eel eem eeo eep eer ees eet elb elc ele ell elm elo elp elr els elt em- emb emc eme eml emm emo emp emr ems emt eo- eob eoc eoe eol eom eoo eop eor eos eot ep- epb epc epe epl epm epo epp epr eps ept erb erc ere erl erm ero erp err ers ert es- esb esc ese esl esm eso esp esr ess est etb etc ete etl etm eto etp etr ets ett l-p lbb lbc lbe lbl lbm lbo lbp lbr lbs lbt lcb lcc lce lcl lcm lco lcp lcr lcs lct leb lec lee lel lem leo lep ler les let llb llc lle lll llm llo llp llr lls llt lmb lmc lme lml lmm lmo lmp lmr lms lmt lob loc loe lol lom loo lop lor los lot lpb lpc lpe lpl lpm lpo lpp lpr lps lpt lrb lrc lrm lro lrp lrr lrs lrt lsb lsc lse lsl lsm lso lsp lsr lss lst ltb ltc lte ltl ltm lto ltp ltr lts ltt m-o m-r mbb mbc mbe mbl mbm mbo mbp mbr mbs mbt mc- mcb mcc mce mcl mcm mco mcp mcr mcs mct meb mec mee mel mem meo mep mer mes met mlb mlc mle mll mlm mlo mlp mlr mls mlt mmb mmc mme mml mmm mmo mmp mmr mms mmt mob moc moe mol mom moo mop mor mos mot mpb mpc mpe mpl mpm mpo mpp mpr mps mpt mrb mrc mre mrl mrm mro mrp mrr mrs mrt msb msc mse msl msm mso msp msr mss mst mtb mtc mte mtl mtm mto mtp mtr mts mtt ob- obb obc obe obl obm obo obp obr obs obt oc- ocb occ ocl ocm oco ocp ocr ocs oct oeb oec oee oel oem oeo oep oer oes oet olb olc ole oll olm olo olp ols olt om- omb omc ome oml omm omo omp omr oms omt oo- oob ooc ool oom ooo oop oor oos oot op- opb opc ope opl opm opo opp opr ops opt or- orb orc ore orl orm oro orp orr ors ort os- osb osc ose osl osm oso osp osr oss ost ot- otb otc ote otl otm oto otp otr ots ott p-p pbb pbc pbe pbl pbm pbo pbp pbr pbs pbt pcb pcc pce pcl pcm pco pcp pcr pcs pct peb pec pee pel pem peo pep per pes pet plb plc ple pll plm plo plp plr pls plt pmb pmc pme pml pmm pmo pmp pmr pms pmt pob poc poe pol pom poo pop por pos pot ppb ppc ppe ppl ppm ppo ppp ppr pps ppt prb prc pre prl prm pro prp prr prs prt ps- psb psc pse psl psm pso psp psr pss pst pt- ptb ptc pte ptl ptm pto ptp ptr pts ptt rbb rbc rbe rbl rbm rbo rbp rbr rbs rbt rcb rcc rce rcl rcm rco rcp rcr rcs rct re- reb rec ree rel rem reo rep rer res ret rlc rle rll rlm rlo rlp rlr rls rlt rmb rmc rme rml rmm rmo rmp rmr rms rmt rob roc roe rol rom roo rop ror ros rot rpb rpc rpe rpl rpm rpo rpp rpr rps rpt rrb rrc rrl rrm rrp rrr rrs rrt rsb rsc rse rsl rsm rso rsp rsr rss rst rtb rtc rte rtl rtm rto rtp rtr rts rtt sbb sbc sbe sbl sbm sbo sbp sbr sbs sbt scb scc sce scl scm sco scp scr scs sct se- seb sec see sel sem seo sep ser ses set slb slc sle sll slm slo slp slr sls slt smb smc sme sml smm smo smp smr sms smt sob soc soe sol som soo sop sor sos sot spb spc spe spl spm spo spp spr sps spt sr- srb src sre srl srm sro srp srr srs srt ss- ssb ssc sse ssl ssm sso ssp ssr sss sst stb stc ste stl stm sto stp str sts stt tbb tbc tbe tbl tbm tbo tbp tbr tbs tbt tcb tcc tce tcl tcm tco tcp tcr tcs tct te- teb tec tee tel tem teo tep ter tes tet tlc tle tll tlm tlo tlp tlr tls tlt tmb tmc tme tml tmm tmo tmp tmr tms tmt to- tob toc toe tol tom too top tor tos tot tpb tpc tpe tpl tpm tpo tpp tpr tps tpt trb trc tre trl trm tro trp