-ol bbb bbd bbk bbl bbn bbo bbt bdb bdd bdk bdl bdo bdt bkb bkk bkl bkn bko bkt blb bld blk bll bln blo blt bnb bnd bnk bnl bnn bno bnt bob bod bok bol bon boo bot btb btd btk btl btn bto btt dbb dbd dbk dbl dbn dbo dbt ddb ddd ddk ddl ddn ddo ddt dkb dkk dkl dko dkt dl- dlb dld dlk dll dlo dlt dnb dnd dnk dnl dnn dno dnt dob dod dok dol don doo dot dtb dtd dtk dtl dtn dto dtt k-t kbb kbd kbk kbl kbn kbo kdb kdk kdl kdo kdt kkb kkk kkl kkn kkt kl- klb kld klo klt kn- knd knk knl knn kno knt kob kod kok kol kon koo kot ktb ktk ktl ktn kto ktt lbb lbd lbk lbl lbo lbt ldb ldd ldk ldl ldn ldo ldt lkb lkl lkt llb lld llk lll lln llo llt lnb lnd lnk lnl lnn lno lnt lob lod lok lol lon loo lot ltb ltd ltk ltl lto ltt nbb nbd nbk nbl nbn nbo nbt ndb ndd ndk ndl ndn ndo ndt nkk nkn nko nkt nlb nld nlk nll nln nlo nlt nnb nnk nnl nnn nno nnt no- nob nod nok nol non noo not ntb ntd ntk ntn nto ntt ob- obb obd obk obl obn obo obt odb odd odl odn odo odt okb okd okk okl oko olb old olk oll oln olo olt on- onb ond onk onl onn ono ont oo- oob ood ook ool oon ooo oot ot- otb otd otk otl otn oto ott tbb tbd tbk tbl tbn tbo tbt tdb tdd tdk tdl tdn tdo tdt tkb tkk tkl tko tkt tld tlk tll tln tlo tlt tnb tnd tnk tnl tnn tno tnt to- tob tod tok tol ton too tot ttb ttd ttk ttl ttn tto ttt