dddd ddot ddpo dod- dodd dodo dood doop door doot dopo dopp dopr dopt dord doro dorp dorr dort dotd doto dott dpdt drod drop drot dtdp dtor dtot dttp oddd odoo odop odor odot odrp oooo oord oort ootp opo- opor oppo opto ordo oro- oror orot orro orto oto- otoo otor otpp otro otto pdpr pod- podd podo pood poop poor poot pop- popo popp popt poro porr port potd poto pott ppod pppd pppo pppp pptt pro- prod proo prop prot prpd prrd prtp prtr ptop ptpd ptrd rodd rodo rood roop roor root ropo roro rort roto rotr rott rpdp rptd rrrr rtdt rttp tdor todd todo todt tood toor toot top- topd topo topp topt tord toro torp torr tort totd toto totr tott tppd tppp tppr tptp tptr trod troo trop trot trpp trtr ttop tttt