bbbb bbdd bbdo bblb bbpr bd-r bldr blob blod bloo blop bobb bobo bodb bodo bold boll bolo boob bood bool boop boor bopp bor- bord boro borr bprd brdo brlp brob brod brol broo bror brrr d-bo dblp dbpd dddd ddpo dlbd dobb dobl dod- dodd dodo dold doll dolo dolp doob dood dool doop door dopo dopp dopr dord doro dorp dorr dpll drob drod drol drop lblr lddp lldb lldp llll llod lloo lob- lobb lobo lold loll lolo loob lood lool loop loor lopp lord loro lpod lppl lprp lrdd lrrr obbo obol obor obro odbo oddd odoo odop odor odrl odrp olbo oldb ollo olor oold oolo oooo oord opo- opor oppo orbb orbo ordo orlo oro- oror orro pdpr plbr plob plod ploo plop plpp pobo pod- podd podo pold poll polo pood pool poop poor pop- popo popp porb poro porr pplo ppod pppd pppo pppp prlr pro- prob prod prol proo prop prpd prrd rbbb rbbr rdbp rob- robb robo rodd rodo rold roll rolo rolp roob rood rool roop roor ropo roro rpdp rpob rrrr