-ous d-ix dddd ddss dfds didi dido dids didu dif- diff difs diii diis dios diou dis- disd disi diso diss dius diux dixi do-x dod- dodd dodi dodo dods doff doid dois doix dood doof doos dosi doso doss doud douf dous doux dsif dsos dssi dudd dudo duds dudu duff dufu duid duif duis duo- duos dusi dxds dxfx dxif dxii dxix dxss dxxx fdos ffff ffii ffss fidf fido fids fiff fifi fifo fiii fios fisd fisi fiss fisu fixx fofo foid fois foix food foof foos fosi foso foss foud fous foxx fsfi fsfo fsix fssf fudd fudi fuff fufu fuid fusd fusi fuso fuss fusu fuxi fxdd 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 ixos ixxi 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- oxi- oxid oxis oxo- oxof oxos oxox oxsi oxud oxuf oxus oxxo s-ii s-os sdds sdif sdio sdsf sdss sdsu sdxf sfio sfos sfss sfsu sidd sidi sido sids siff sifo sifu siod sios siou siox sisd sisi siss sisu siui sius sixo sixx sodd sodo sods sodu sofi sofo soif sois sood soof soos sosi soso soss soud souf sous soxs 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 sux- uddi udds udid udoo udos udox udsd ufos ufxs uisd uofo usdf usdo usds usfi usfs usif usis usix usoi usos ussf usss ussu usui usus uusi uuuu uxus x-fi xdos xdxf xidi xiii xisi xixi xois xoxo xuxu xxii xxix xxxi xxxo xxxx