c-cd cccc ccci ccdc ccdi cced ccee ccic ccid ccii ccix ccxi cd-e cdec cdex cdic cdii cdxi cec- cece ceci cedd cede cedi ceec cexe cicc cici cidc cide cidi ciee ciid ciii cixi cxii cxix cxxi cxxx d-ix dccc dcci dcii dcix dcxi dcxx dddd ddie dec- decc decd dece deci dedd dede dedi deed deid deie dex- dexe dice dici dide didi died diex diii dixi dxcc dxci dxdc dxec dxed dxii dxix dxxx eccc ecce ecci ecdc eced eddc edde eddi ede- edei edex edie eede eeee eid- eide eidi eiec eied eiei exec exed exid iccc icci icdc icdd icde icec iced icee icex idce idec ided idee idex idic idid idie iecc ieie iicd iide iied iiie iiii ixxi x-ed xcii xdcc xexe xidi xiii xixi xxii xxix xxxi xxxx