-ol b-p bbb bbe bbi bbl bbo bbp bbs be- beb bee bei bel beo bep bes bi- bib bie bii bil bio bip bis blb ble bli bll blo blp bls bob boe boi bol boo bop bos bpb bpe bpi bpl bpo bpp bps bsb bse bsi bsl bso bsp bss ebb ebe ebi ebl ebo ebp ebs eeb eee eel eeo eep ees eib eie eii eil eio eip eis elb ele eli ell elo elp els eo- eob eoe eoi eol eoo eop eos ep- epb epe epi epl epo epp eps es- esb ese esi esl eso esp ess ibb ibe ibi ibl ibo ibp ibs ie- iee iei iel iep ies iib iie iii iil iio iip iis il- ilb ile ili ill ilo ilp ils io- iob ioe ioi iol ioo iop ios ipb ipe ipi ipl ipo ipp ips is- isb ise isi isl iso isp iss l-p lbb lbe lbi lbl lbo lbp lbs leb lee lei lel leo lep les lib lie lii lil lio lip lis llb lle lli lll llo llp lls lob loe loi lol loo lop los lpb lpe lpi lpl lpo lpp lps lsb lse lsi lsl lso lsp lss o-i ob- obb obe obi obl obo obp obs oeb oee oei oel oeo oep oes oib oie oii oil oio oip ois olb ole oli oll olo olp ols oo- oob ooi ool ooo oop oos op- opb ope opi opl opo opp ops os- osb ose osi osl oso osp oss p-p pbb pbe pbi pbl pbo pbp pbs peb pee pei pel peo pep pes pib pie pii pil pio pip pis plb ple pli pll plo plp pls pob poe poi pol poo pop pos ppb ppe ppi ppl ppo ppp pps ps- psb pse psi psl pso psp pss sbb sbe sbi sbl sbo sbp sbs se- seb see sei sel seo sep ses sib sie sii sil sio sip sis slb sle sli sll slo slp sls sob soe soi sol soo sop sos spb spe spi spl spo spp sps ss- ssb sse ssi ssl sso ssp sss