-ol bbb bbi bbl bbm bbo bbr bbs bbt bi- bib bii bil bim bio bir bis bit blb bli bll blm blo blr bls blt bmb bmi bml bmm bmo bmr bms bmt bob boi bol bom boo bor bos bot brb bri brl brm bro brr brs brt bsb bsi bsl bsm bso bsr bss bst btb bti btl btm bto btr bts btt ibb ibi ibl ibm ibo ibr ibs ibt iib iii iil iim iio iir iis iit il- ilb ili ill ilm ilo ilr ils ilt im- imb imi iml imm imo ims imt io- iob ioi iol iom ioo ior ios iot ir- irb iri irl irm iro irr irs irt is- isb isi isl ism iso isr iss ist itb iti itl itm ito its itt lbb lbi lbl lbm lbo lbr lbs lbt lib lii lil lim lio lir lis lit llb lli lll llm llo llr lls llt lmb lmi lml lmm lmo lmr lms lmt lob loi lol lom loo lor los lot lrb lri lrm lro lrr lrs lrt lsb lsi lsl lsm lso lsr lss lst ltb lti ltl ltm lto ltr lts ltt m-o m-r mbb mbi mbl mbm mbo mbr mbs mbt mi- mib mii mil mim mio mir mis mit mlb mli mll mlm mlo mlr mls mlt mmb mmi mml mmm mmo mmr mms mmt mob moi mol mom moo mor mos mot mrb mri mrl mrm mro mrr mrs mrt msb msi msl msm mso msr mss mst mtb mti mtl mtm mto mtr mts mtt o-i ob- obb obi obl obm obo obr obs obt oib oii oil oim oio oir ois oit olb oli oll olm olo ols olt om- omb omi oml omm omo omr oms omt oo- oob ooi ool oom ooo oor oos oot or- orb ori orl orm oro orr ors ort os- osb osi osl osm oso osr oss ost ot- otb oti otl otm oto otr ots ott rbb rbi rbl rbm rbo rbr rbs rbt rib rii ril rim rio rir ris rit rli rll rlm rlo rlr rls rlt rmb rmi rml rmm rmo rmr rms rmt rob roi rol rom roo ror ros rot rrb rri rrl rrm rrr rrs rrt rsb rsi rsl rsm rso rsr rss rst rtb rti rtl rtm rto rtr rts rtt sbb sbi sbl sbm sbo sbr sbs sbt sib sii sil sim sio sir sis sit slb sli sll slm slo slr sls slt smb smi sml smm smo smr sms smt sob soi sol som soo sor sos sot sr- srb sri srl srm sro srr srs srt ss- ssb ssi ssl ssm sso ssr sss sst stb sti stl stm sto str sts stt tbb tbi tbl tbm tbo tbr tbs tbt tib tii til tim tio tir tis tit tli tll tlm tlo tlr tls tlt tmb tmi tml tmm tmo tmr tms tmt to- tob toi tol tom too tor tos tot trb tri trl trm tro trr trs trt tsb tsi tsl tsm tso tsr tss tst ttb tti ttl ttm tto ttr tts ttt