-ol bbb bbi bbl bbn bbo bbr bbs bbt bi- bib bii bil bin bio bir bis bit blb bli bll bln blo blr bls blt bnb bni bnl bnn bno bnr bns bnt bob boi bol bon boo bor bos bot brb bri brl brn bro brr brs brt bsb bsi bsl bsn bso bsr bss bst btb bti btl btn bto btr bts btt ibb ibi ibl ibn ibo ibr ibs ibt iib iii iil iin iio iir iis iit il- ilb ili ill iln ilo ilr ils ilt in- inb ini inl inn ino inr ins int io- iob ioi iol ion ioo ior ios iot ir- irb iri irl irn iro irr irs irt is- isb isi isl isn iso isr iss ist itb iti itl itn ito its itt lbb lbi lbl lbo lbr lbs lbt lib lii lil lin lio lir lis lit llb lli lll lln llo llr lls llt lnb lni lnl lnn lno lnr lns lnt lob loi lol lon loo lor los lot lrb lri lrn lro lrr lrs lrt lsb lsi lsl lsn lso lsr lss lst ltb lti ltl lto ltr lts ltt n-i nbb nbi nbl nbn nbo nbr nbs nbt nib nii nil nin nio nir nis nit nlb nli nll nln nlo nlr nls nlt nnb nni nnl nnn nno nns nnt no- nob noi nol non noo nor nos not nrb nri nrl nrn nro nrr nrs nrt nsb nsi nsl nsn nso nsr nss nst ntb nti ntn nto ntr nts ntt o-i ob- obb obi obl obn obo obr obs obt oib oii oil oin oio oir ois oit olb oli oll oln olo ols olt on- onb oni onl onn ono onr ons ont oo- oob ooi ool oon ooo oor oos oot or- orb ori orl orn oro orr ors ort os- osb osi osl osn oso osr oss ost ot- otb oti otl otn oto otr ots ott rbb rbi rbl rbn rbo rbr rbs rbt rib rii ril rin rio rir ris rit rli rll rln rlo rlr rls rlt rnb rni rnn rno rnr rns rnt rob roi rol ron roo ror ros rot rrb rri rrl rrn rrr rrs rrt rsb rsi rsl rsn rso rsr rss rst rtb rti rtl rtn rto rtr rts rtt sbb sbi sbl sbn sbo sbr sbs sbt sib sii sil sin sio sir sis sit slb sli sll sln slo slr sls slt snb sni snl snn sno snr sns snt sob soi sol son soo sor sos sot sr- srb sri srl srn sro srr srs srt ss- ssb ssi ssl ssn sso ssr sss sst stb sti stl stn sto str sts stt tbb tbi tbl tbn tbo tbr tbs tbt tib tii til tin tio tir tis tit tli tll tln tlo tlr tls tlt tnb tni tnl tnn tno tnr tns tnt to- tob toi tol ton too tor tos tot trb tri trl trn tro trr trs trt tsb tsi tsl tsn tso tsr tss tst ttb tti ttl ttn tto ttr tts ttt