-up b-p b-u bbb bbc bbg bbk bbn bbo bbp bbr bbu bcb bcc bcg bck bcn bco bcp bcr bcu bgb bgc bgg bgk bgn bgo bgp bgr bgu bkb bkc bkg bkk bkn bko bkp bkr bnb bnc bng bnk bnn bno bnp bnr bnu bob boc bog bok bon boo bop bor bou bpb bpc bpg bpn bpo bpp bpr bpu brb brg brk brn bro brp brr bru bub buc bug buk bun buo bup bur buu c-- cbb cbc cbg cbk cbn cbo cbp cbr cbu ccb ccc ccg cck ccn cco ccp ccr ccu cgb cgc cgg cgn cgo cgp cgr cgu ckb ckc cko cn- cnb cnc cng cnn cno cnp cnr cnu co- cob coc cog cok con coo cop cor cou cpb cpc cpg cpk cpn cpo cpp cpr cpu crb crc crg crk crn cro crp crr cru cub cuc cug cuk cun cuo cup cur cuu g-p gbc gbg gbk gbn gbo gbp gbr gbu gcb gcc gcg gck gcn gco gcp gcr gcu ggb ggc ggg ggn ggo ggp ggr ggu gkb gkn gko gkp gnb gnc gnn gno gnp gnr gnu gob goc gog gok gon goo gop gor gou gpb gpc gpg gpk gpn gpo gpp gpr gpu grb grc grg grk grn gro grp grr gru gu- gub guc gug guk gun guo gup gur guu kbb kbc kbk kbn kbo kbp kbr kbu kcb kcc kcg kck kcn kcp kcr kcu kgb kgc kgo kgp kgu kkb kkc kkk kkn kkp kkr kku kn- knc kng knk knn kno knp knr knu kob koc kog kok kon koo kop kor kou kpc kpk kpn kpo kpp kpr kpu krc krg krk krn kro krp krr kru kub kuc kug kuk kun kup kur kuu nbb nbc nbg nbk nbn nbo nbp nbr nbu ncb ncc ncg nck ncn nco ncp ncr ncu ngb ngc ngg ngk ngn ngo ngp ngu nkc nkk nkn nko nkp nkr nku nnb nnc nng nnk nnn nno nnp nnu no- nob noc nog nok non noo nop nor nou npb npc npg npn npo npp npr npu nrb nrc nrg nrk nrn nro nrp nrr nru nub nuc nug nuk nun nuo nup nur nuu ob- obb obc obg obk obn obo obp obr obu oc- ocb occ ocg ock ocn oco ocp ocr ocu ogc ogg ogn ogo ogp okb okc okg okk oko okp okr oku on- onb onc ong onk onn ono onp onr onu oo- oob ooc oog ook oon ooo oop oor op- opb opc opg opk opn opo opp opr or- orb orc org ork orn oro orp orr oru ou- ouc ouk oun ouo oup our p-p pbb pbc pbg pbk pbn pbo pbp pbr pbu pcb pcc pcg pck pcn pco pcp pcr pcu pgb pgc pgg pgk pgn pgo pgp pgr pkb pkc pkg pkn pko pkp pkr pku pn- pnb pnc png pnk pnn pno pnp pnr pnu pob poc pog pok pon poo pop por pou ppb ppc ppg ppk ppn ppo ppp ppr ppu prb prc prg prk prn pro prp prr pru pub puc pug puk pun pup pur puu rbb rbc rbg rbk rbn rbo rbp rbr rbu rcb rcc rcg rcn rco rcp rcr rcu rgb rgc rgg rgk rgn rgo rgp rgr rkb rkc rkg rkk rko rkp rku rnb rnc rng rnn rno rnp rnr rnu rob roc rog rok ron roo rop ror rou rpb rpc rpg rpk rpn rpo rpp rpr rpu rrb rrc rrg rrk rrn rrp rrr rru rub ruc rug ruk run ruo rup rur ruu ubb ubc ubg ubk ubn ubo ubp ubr ubu ucb ucc ucg uck ucn uco ucp ucr ucu ugb ugc ugg ugk ugn ugo ugp ugr ugu ukb ukc ukk ukn ukp ukr uku un- unb unc ung unk unn uno unp unr unu uob uoc uog uok uon uoo uop uor up- upb upc upg upk upn upo upp upr upu ur- urb urc urg urk urn uro urp urr uru uuc uug uun uur uuu