c-cd cccc ccci cccp cccu cccv ccdc ccdi ccdp ccic ccid ccii ccip cciv ccoc ccod ccpp ccuc ccup ccvi ccvo cdic cdii cdio cdiv cdvd cdvi cicc cici cico cicu cidc cidi cidp ciid ciii cipo cipp ciuc ciup civc civo coco cocp cocu codd codi coip cood coop copd copi copo copp coud coup covo cpcu cpic cpio cppd cpvc cucc cuci cudi cui- cupo cupp cvcc cvid cvii dccc dcci dccp dccu dccv dcii dcio dciv dcop dcpo dcup dcvd dcvi dddd ddoc ddpo dici dico didi dido didu diii diiv dioc diop diou dipc dipo dipp dipu divd divi divo doci doco docu dod- dodd dodi dodo doid dood doop dopo dopp douc doud doup dovi dpci dpcp dppc duco dudd dudo dudu duid duo- dupo dvi- dvii iccc icci icco iccp iccu icdc icdd icdp icoc icod icpc icpd icpo icup iddo idic idid idio idoc iduo idvd iicd iiii iiio iioi iioo iiop iiuc ioci iocp iod- iodd iodo ioii ioio iooi iooo ipcc ipdc ipdi ipid ipod ipop ippc ippo iucc iucv iuiu iupp ivic ivod occc occi ocpd ocpp odci oddd oddi odic odio odiu odoo odop odou oici oido oiii oipc oodi ooid oooo opic opii opio opo- oppi oppo oucc oudc ouii oupv ouu- ovi- ovid ovo- ovod ovoo ovpp pccc pcip pcod pcpp pdci pdcp pdic pdoc picc pici pico picu pido piip pipi pipo pipp pivo pocd poco pod- podd podi podo podu poid poio pood poop pop- popc popi popo popp poud poui poup povo ppcc ppcd ppci ppic ppid ppod pppd pppo pppp pudo pudu puid puiu pupi pupu puuc pvco pvdc ucci uccp ucdc ucdd ucio uddi udic udid udoo udop udpd uipi uocc uovo upci updo upic uppc uppp uppu upup upvc uucp uuoc uuuu uv-c uvic uvid uvvu vcci vdcc vdcp vdio vic- vici vico vidi vido viii vivi vivo vodo voic void voio voip vooc voud vuco vudi vudu vvvv