dddd ddot ddss ddts dod- dodd dodo dods dood door doos doot dord doro dorr dors dort doso doss dost dotd doto dots dott drod drot drrs dsdr dsos dsrr dsst dsto dsts dtor dtot dtss oddd odds odoo odor odos odot odso odts oooo ooos oord oort oost oots ordo ords oro- oror oros orot orro orrs orso orto orts osoo osor osos osrd osro ossd osso ostr osts oto- otoo otor otos otro otrs otso otto otts rdos rdso rodd rodo rods rood roor roos root roro rort roso ross rost roto rotr rots rott rrrr rsdd rsds rsos rsts rtdt rtss rtts s-os sdds sdot sdrs sdss sodd sodo sods sood soor soos soot sord soro sorr sors sort soso soss sost soto sots sros srsd srtr ssdd ssot ssrs ssss sstd ssts stds stod stoo stor stos stot strd stro strs stss sttd sttr tdor tdss todd todo tods todt tood toor toos toot tord toro torr tors tort toso toss tost totd toto totr tots tott trod troo tros trot trsd trst trtr tsos tssr tsst tsts ttss tttt