a-ii aaaa aaac aaad aaaf aaai aaca aacc aacd aacf aaci aada aadc aadi aafa aafc aafd aaff aafi aaic aaii acaa acac acad acai acca accc accd accf acci acda acdc acdf acdi acfc acfd acfi aci- acia acic acid acif adaa adac adad adai adcc adci adda addc addd addi adfa adfc adia adic adif afaa afad afca afcc afci afdc affa affc affi afia afid afif aiai aica aicc aicd aicf aida aidc aidi aifd aiff aiia aiic aiid c-cd caaa caac caaf cac- caca cacc caci cada cadc cadd cadi cafa cafc caff caia caic caid ccaa ccac ccad ccaf ccai ccca cccc cccf ccci ccdc ccdf ccdi ccfa ccfc ccfd ccff ccfi ccic ccid ccii cdaa cdac cdad cdai cdda cdfa cdic cdii cfaa cfac cfca cfcf cfda cfia ciaa cica cicc cici cida cidc cidi cifa ciff ciia ciid ciii daad daca daci dada dadi dafa dafc daff dafi daia daid dcca dccc dcci dcfc dcia dcii dddd dfaf dfcc dffa dia- diac diad diaf dica dici dida didi dif- difa diff diii faaa faac faad faca facc fada fadd fadi fafa fafc faff fafi faid fcca fccf fcda fcic fcii fdca fdic ffcc ffff ffii fiaa fiac fiad fiaf fica ficc fida fidc fidf fifa fifc fiff fifi fiii iaaa iaac iaai iaca iacc iadc iafc iaff iaia icaa icac icad icaf icai icca iccc iccf icci icdc icdd idad idca idda idfa idfc idia idic idid ifaa ifac ifcd ifda ific ifid iiac iica iicd iida iifa iiii