b-p bbb bbk bbn bbo bbp bbr bbw bkb bkk bkn bko bkp bkr bkw bnb bnk bnn bno bnp bnr bnw bob bok bon boo bop bor bow bpb bpn bpo bpp bpr bpw brb brk brn bro brp brr brw bwb bwk bwo bwp bwr kbb kbk kbn kbo kbp kbr kbw kkb kkk kkn kkp kkr kn- knk knn kno knp knr kob kok kon koo kop kor kow kpk kpn kpo kpp kpr kpw krk krn kro krp krr krw kw- kwk kwo kwp kww nbb nbk nbn nbo nbp nbr nbw nkk nkn nko nkp nkr nnb nnk nnn nno nnp nnw no- nob nok non noo nop nor now npb npn npo npp npr npw nrb nrk nrn nro nrp nrr nrw nwb nwn nwo nwp nwr ob- obb obk obn obo obp obr obw okb okk oko okp okr okw on- onb onk onn ono onp onr oo- oob ook oon ooo oop oor oow op- opb opk opn opo opp opr opw or- orb ork orn oro orp orr owb owk own owo owp oww p-p pbb pbk pbn pbo pbp pbr pbw pkb pkn pko pkp pkr pn- pnb pnk pnn pno pnp pnr pnw pob pok pon poo pop por pow ppb ppk ppn ppo ppp ppr ppw prb prk prn pro prp prr prw pwb pwn pwo pwp pwr rbb rbk rbn rbo rbp rbr rbw rkb rkk rko rkp rnb rnn rno rnp rnr rnw rob rok ron roo rop ror row rpb rpk rpn rpo rpp rpr rpw rrb rrk rrn rrp rrr rwb rwr wbb wbn wbo wbr wbw wkb wko wkp wkr wkw wn- wnn wno wnp wnw wob wok won woo wop wor wow wpb wpk wpn wpo wpp wpr wr- wrk wrn wro wrp wrr wrw wwn wwo wwp www