a-do aaaa aaac aaad aaca aacc aacd aaco aacu aada aadc aadu aaoo acaa acac acad acca accc accd acco accu acda acdc acoa acod acou acu- acuo adaa adac adad adao adcc adda addc addd addo addu adoc adod adoo adua aoca auaa auca audc audo c-cd caaa caac cac- caca cacc caco cada cadc cadd cado cadu caod cauc cauo ccaa ccac ccad ccca cccc cccu ccdc ccoc ccod ccuc cdaa cdac cdad cdda coad coca coco cocu coda codd cood coua coud cuau cuca cucc cuda daad daau daca dada dado dadu daou daud dcca dccc dccu dddd ddoc doca doco docu dod- doda dodd dodo dood douc doud duaa duad duca duco duda dudd dudo dudu duo- oaau ocac ocad occa occc odac odda oddd odoo odou ooaa ooda oooo ouac ouad oucc oudc ouu- uaca uaoc uaua ucad ucca ucdc ucdd ucua udaa udad udau udca udoo uocc uuoc uuuu