-ous dddd ddss dfds didi dido dids didu dif- diff difs diii diis dios diou dis- disd disi diso diss dius dod- dodd dodi dodo dods doff doid dois dood doof doos dosi doso doss doud douf dous dsif dsos dssi dudd dudo duds dudu duff dufu duid duif duis duo- duos dusi fdos ffff ffii ffss fidf fido fids fiff fifi fifo fiii fios fisd fisi fiss fisu fofo foid fois food foof foos fosi foso foss foud fous fsfi fsfo fssf fudd fudi fuff fufu fuid fusd fusi fuso fuss fusu iddo idid idio idis idos idsf idso idss iduo idus ifid ifis ifso iiii iiio iiis iioi iioo iios iisd iisi iisu iod- iodd iodo ioii ioio ioof iooi iooo ioos ioso iosu ious isds isis iso- isof isos issf issi isso isss issu isus iuds iuiu iusd iuss oddd oddi odds odio odis odiu odoo odos odou odso odus off- offo offs offu ofid ofus oido oids oiii oios oisd oisu oodi ooff oofs ooid oooo ooos oosi oous osdi osii osis osoi osoo osos ossd ossi osso ossu ouds ouff ouii ouis ousd ouu- s-ii s-os sdds sdif sdio sdsf sdss sdsu sfio sfos sfss sfsu sidd sidi sido sids siff sifo sifu siod sios siou sisd sisi siss sisu siui sius sodd sodo sods sodu sofi sofo soif sois sood soof soos sosi soso soss soud souf sous ssdd ssdf ssid ssis sssf sssi ssss sudd sudi sudo suds suf- suff sufi sufs sufu suid suio suis suos sus- susd susi suso suss susu suus uddi udds udid udoo udos udsd ufos uisd uofo usdf usdo usds usfi usfs usif usis usoi usos ussf usss ussu usui usus uusi uuuu