-ol bbb bbd bbi bbl bbo bbr bbs bbt bdb bdd bdi bdl bdo bdr bds bdt bi- bib bid bii bil bio bir bis bit blb bld bli bll blo blr bls blt bob bod boi bol boo bor bos bot brb brd bri brl bro brr brs brt bsb bsd bsi bsl bso bsr bss bst btb btd bti btl bto btr bts btt dbb dbd dbi dbl dbo dbr dbs dbt ddb ddd ddi ddl ddo ddr dds ddt di- dib did dii dil dio dir dis dit dl- dlb dld dli dll dlo dlr dls dlt dob dod doi dol doo dor dos dot drb drd dri drl dro drr drs drt dsb dsd dsi dsl dso dsr dss dst dtb dtd dti dtl dto dtr dts dtt i-d ibb ibd ibi ibl ibo ibr ibs ibt idb idd idi idl ido idr ids idt iib iid iii iil iio iir iis iit il- ilb ild ili ill ilo ilr ils ilt io- iob iod ioi iol ioo ior ios iot ir- irb ird iri irl iro irr irs irt is- isb isd isi isl iso isr iss ist itb itd iti itl ito its itt lbb lbd lbi lbl lbo lbr lbs lbt ldb ldd ldi ldl ldo ldr lds ldt lib lid lii lil lio lir lis lit llb lld lli lll llo llr lls llt lob lod loi lol loo lor los lot lrb lrd lri lro lrr lrs lrt lsb lsd lsi lsl lso lsr lss lst ltb ltd lti ltl lto ltr lts ltt o-i ob- obb obd obi obl obo obr obs obt odb odd odi odl odo odr ods odt oib oid oii oil oio oir ois oit olb old oli oll olo ols olt oo- oob ood ooi ool ooo oor oos oot or- orb ord ori orl oro orr ors ort os- osb osd osi osl oso osr oss ost ot- otb otd oti otl oto otr ots ott rbb rbd rbi rbl rbo rbr rbs rbt rdb rdd rdi rdl rdo rdr rds rdt rib rid rii ril rio rir ris rit rld rli rll rlo rlr rls rlt rob rod roi rol roo ror ros rot rrb rrd rri rrl rrr rrs rrt rsb rsd rsi rsl rso rsr rss rst rtb rtd rti rtl rto rtr rts rtt sbb sbd sbi sbl sbo sbr sbs sbt sdb sdd sdi sdl sdo sdr sds sdt sib sid sii sil sio sir sis sit slb sld sli sll slo slr sls slt sob sod soi sol soo sor sos sot sr- srb srd sri srl sro srr srs srt ss- ssb ssd ssi ssl sso ssr sss sst stb std sti stl sto str sts stt tbb tbd tbi tbl tbo tbr tbs tbt tdb tdd tdi tdl tdo tdr tds tdt tib tid tii til tio tir tis tit tld tli tll tlo tlr tls tlt to- tob tod toi tol too tor tos tot trb trd tri trl tro trr trs trt tsb tsd tsi tsl tso tsr tss tst ttb ttd tti ttl tto ttr tts ttt