bbbb bbdd bbdo bbpr bd-r bkpr bobb bobo bodb bodo boko boob bood book boop boor bopp bor- bord bork boro borr bprd brdo brkb brob brod brok broo bror brrr d-bo dbpd dddd ddpo dobb dod- dodd dodo doko doob dood dook doop door dopo dopp dopr dord dork doro dorp dorr dprk drob drod drop kbbb kbbd kbbk kbbo kbbr kbdb kbdo kbdr kbkb kbkk kbko kbkr kbob kbod kbok kboo kbpk kbpo kbpr kbrb kbrd kbrk kbro kdbb kdbr kddb kddd kddk kddr kdkb kdkd kdkk kdko kdkr kdok kdpr kdrb kdro kkbb kkbd kkbo kkbr kkdd kkdo kkkk kkob kkoo kkor kkpk kkrb kkrk kkro kkrr kobb kobk kobo kobr kodk kodo kokb kokk koko kokp kokr koob kook kooo koop koor kopb kopp kopr korb kord kork koro korr kpbb kpbd kpbr kpdb kpdo kpdr kpkk kpkr kpob kpod kpok kpoo kpop kppd kppk kppo kppp kppr kprb kprd kprk kpro kprp kprr krbb krbd krbk krbr krdd krdo krdr krkd krkk krko krkr krob krod krok kroo krop kror krpr krrb krrk krro krrr obbo obkb obok obor obro odbo oddd odoo odop odor odrp okko okok okor okpo okro oooo oord opo- opor oppo orbb orbo ordo orko oro- orok oror orro pbpk pdpr pobo pod- podd podo poko pood pook poop poor pop- popo popp porb pork poro porr ppdk ppod pppd pppo pppp pro- prob prod proo prop prpd prrd rbbb rbbr rdbp rob- robb robo rodd rodo rokk roko rokr roob rood rook roop roor ropo rork roro rpdp rpob rrrr