-up b-p b-u bbb bbd bbn bbo bbp bbu bdb bdd bdo bdp bdu bnb bnd bnn bno bnp bnu bob bod bon boo bop bou bpb bpd bpn bpo bpp bpu bub bud bun buo bup buu dbb dbd dbn dbo dbp dbu ddb ddd ddn ddo ddp ddu dnb dnd dnn dno dnp dob dod don doo dop dou dpb dpd dpn dpo dpp dpu dub dud dun duo dup nbb nbd nbn nbo nbp nbu ndb ndd ndn ndo ndp ndu nnb nnn nno nnp nnu no- nob nod non noo nop nou npb npd npn npo npp npu nub nud nun nuo nup nuu ob- obb obd obn obo obp obu odb odd odn odo odp odu on- onb ond onn ono onp onu oo- oob ood oon ooo oop op- opb opd opn opo opp ou- oud oun ouo oup p-p pbb pbd pbn pbo pbp pbu pdb pdd pdn pdo pdp pdu pn- pnb pnd pnn pno pnp pnu pob pod pon poo pop pou ppb ppd ppn ppo ppp ppu pub pud pun pup puu ubb ubn ubo ubp ubu udb udd udn udo udp udu un- unb und unn uno unp unu uob uod uon uoo uop up- upb upd upn upo upp upu uun uuu