-up b-p b-u bbb bbd bbn bbo bbp bbt bbu bdb bdd bdo bdp bdt bdu bnb bnd bnn bno bnp bnt bnu bob bod bon boo bop bot bou bpb bpd bpn bpo bpp bpt bpu btb btd btn bto btp btt btu bub bud bun buo bup but buu dbb dbd dbn dbo dbp dbt dbu ddb ddd ddn ddo ddp ddt ddu dnb dnd dnn dno dnp dnt dob dod don doo dop dot dou dpb dpd dpn dpo dpp dpt dpu dtb dtd dtn dto dtp dtt dtu dub dud dun duo dup dut nbb nbd nbn nbo nbp nbt nbu ndb ndd ndn ndo ndp ndt ndu nnb nnn nno nnp nnt nnu no- nob nod non noo nop not nou npb npd npn npo npp npt npu ntb ntd ntn nto ntp ntt ntu nub nud nun nuo nup nut nuu ob- obb obd obn obo obp obt obu odb odd odn odo odp odt odu on- onb ond onn ono onp ont onu oo- oob ood oon ooo oop oot op- opb opd opn opo opp opt ot- otb otd otn oto otp ott otu ou- oud oun ouo oup out p-p pbb pbd pbn pbo pbp pbt pbu pdb pdd pdn pdo pdp pdt pdu pn- pnb pnd pnn pno pnp pnt pnu pob pod pon poo pop pot pou ppb ppd ppn ppo ppp ppt ppu pt- ptb ptd ptn pto ptp ptt ptu pub pud pun pup put puu tbb tbd tbn tbo tbp tbt tbu tdb tdd tdn tdo tdp tdt tdu tnb tnd tnn tno tnp tnt to- tob tod ton too top tot tou tpb tpd tpn tpo tpp tpt tpu ttb ttd ttn tto ttp ttt ttu tub tud tun tuo tup tut tuu ubb ubn ubo ubp ubt ubu udb udd udn udo udp udt udu un- unb und unn uno unp unt unu uob uod uon uoo uop uot up- upb upd upn upo upp upt upu utb utd utn uto utp utt utu uun uut uuu