-ol b-p bbb bbd bbl bbn bbo bbp bbt bdb bdd bdl bdo bdp bdt blb bld bll bln blo blp blt bnb bnd bnl bnn bno bnp bnt bob bod bol bon boo bop bot bpb bpd bpl bpn bpo bpp bpt btb btd btl btn bto btp btt dbb dbd dbl dbn dbo dbp dbt ddb ddd ddl ddn ddo ddp ddt dl- dlb dld dll dlo dlp dlt dnb dnd dnl dnn dno dnp dnt dob dod dol don doo dop dot dpb dpd dpl dpn dpo dpp dpt dtb dtd dtl dtn dto dtp dtt l-p lbb lbd lbl lbo lbp lbt ldb ldd ldl ldn ldo ldp ldt llb lld lll lln llo llp llt lnb lnd lnl lnn lno lnp lnt lob lod lol lon loo lop lot lpb lpd lpl lpn lpo lpp lpt ltb ltd ltl lto ltp ltt nbb nbd nbl nbn nbo nbp nbt ndb ndd ndl ndn ndo ndp ndt nlb nld nll nln nlo nlp nlt nnb nnl nnn nno nnp nnt no- nob nod nol non noo nop not npb npd npl npn npo npp npt ntb ntd ntn nto ntp ntt ob- obb obd obl obn obo obp obt odb odd odl odn odo odp odt olb old oll oln olo olp olt on- onb ond onl onn ono onp ont oo- oob ood ool oon ooo oop oot op- opb opd opl opn opo opp opt ot- otb otd otl otn oto otp ott p-p pbb pbd pbl pbn pbo pbp pbt pdb pdd pdl pdn pdo pdp pdt plb pld pll pln plo plp plt pn- pnb pnd pnl pnn pno pnp pnt pob pod pol pon poo pop pot ppb ppd ppl ppn ppo ppp ppt pt- ptb ptd ptl ptn pto ptp ptt tbb tbd tbl tbn tbo tbp tbt tdb tdd tdl tdn tdo tdp tdt tld tll tln tlo tlp tlt tnb tnd tnl tnn tno tnp tnt to- tob tod tol ton too top tot tpb tpd tpl tpn tpo tpp tpt ttb ttd ttl ttn tto ttp ttt