-ol b-p bbb bbe bbi bbl bbm bbo bbp bbs be- beb bee bei bel bem beo bep bes bi- bib bie bii bil bim bio bip bis blb ble bli bll blm blo blp bls bmb bme bmi bml bmm bmo bmp bms bob boe boi bol bom boo bop bos bpb bpe bpi bpl bpm bpo bpp bps bsb bse bsi bsl bsm bso bsp bss ebb ebe ebi ebl ebm ebo ebp ebs eeb eee eel eem eeo eep ees eib eie eii eil eim eio eip eis elb ele eli ell elm elo elp els em- emb eme emi eml emm emo emp ems eo- eob eoe eoi eol eom eoo eop eos ep- epb epe epi epl epm epo epp eps es- esb ese esi esl esm eso esp ess ibb ibe ibi ibl ibm ibo ibp ibs ie- iee iei iel iem iep ies iib iie iii iil iim iio iip iis il- ilb ile ili ill ilm ilo ilp ils im- imb ime imi iml imm imo imp ims io- iob ioe ioi iol iom ioo iop ios ipb ipe ipi ipl ipm ipo ipp ips is- isb ise isi isl ism iso isp iss l-p lbb lbe lbi lbl lbm lbo lbp lbs leb lee lei lel lem leo lep les lib lie lii lil lim lio lip lis llb lle lli lll llm llo llp lls lmb lme lmi lml lmm lmo lmp lms lob loe loi lol lom loo lop los lpb lpe lpi lpl lpm lpo lpp lps lsb lse lsi lsl lsm lso lsp lss m-o mbb mbe mbi mbl mbm mbo mbp mbs meb mee mei mel mem meo mep mes mi- mib mie mii mil mim mio mip mis mlb mle mli mll mlm mlo mlp mls mmb mme mmi mml mmm mmo mmp mms mob moe moi mol mom moo mop mos mpb mpe mpi mpl mpm mpo mpp mps msb mse msi msl msm mso msp mss o-i ob- obb obe obi obl obm obo obp obs oeb oee oei oel oem oeo oep oes oib oie oii oil oim oio oip ois olb ole oli oll olm olo olp ols om- omb ome omi oml omm omo omp oms oo- oob ooi ool oom ooo oop oos op- opb ope opi opl opm opo opp ops os- osb ose osi osl osm oso osp oss p-p pbb pbe pbi pbl pbm pbo pbp pbs peb pee pei pel pem peo pep pes pib pie pii pil pim pio pip pis plb ple pli pll plm plo plp pls pmb pme pmi pml pmm pmo pmp pms pob poe poi pol pom poo pop pos ppb ppe ppi ppl ppm ppo ppp pps ps- psb pse psi psl psm pso psp pss sbb sbe sbi sbl sbm sbo sbp sbs se- seb see sei sel sem seo sep ses sib sie sii sil sim sio sip sis slb sle sli sll slm slo slp sls smb sme smi sml smm smo smp sms sob soe soi sol som soo sop sos spb spe spi spl spm spo spp sps ss- ssb sse ssi ssl ssm sso ssp sss