dddd ddpo dfrf dhod dhor dhpr dod- dodd dodo doff dohr dood doof doop door dopo dopp dopr dord dorf doro dorp dorr dphp dpph drod drof droh drop ffff ffrr fofo fohr food foof fopp for- ford foro forr fprf froh frop frpd hdod hhhh hhof hodh hodr hoff hoho hood hoof hoop hoor hopf hopo hopp hord horo horr hpdh hrod hrpp oddd odoh odoo odop odor odrp ofdr off- offh offo offr ofor ohho ohoh ooff ooho oooh oooo oord opo- opor oppo ordo orff oro- orof oror orph orro pdpr pfff pffr phoh phoo phrr pod- podd podo poff pood poof pooh poop poor pop- popo popp poro porr ppod pppd pppo pppp pprf pro- prod prof proo prop prpd prrd rhod rhoh rodd rodo roff rofo rohr rood roof roop roor ropo roro rpdp rpho rpof rrrr