cccc ccci ccic ccii ccir ccoc ccrc ccri ccrt cctc cctt cicc cici cico cicr cict ciii ciit cior circ ciri ciro cirr cirt citi cito citt coco coct coir coit coot cor- corc cori coro corr cort cotc coti coto cott cozi cozz crcc crcr crcz cric crit croc croo cror crot croz crrt crtc ctic ctor ctot ctrc iccc icci icco iccr icct icoc icor icrc icrr icrt iiii iiio iiit iioi iioo iirc iitr iitt ioci ioii ioio ioit iooi iooo iori ioto ircc iri- iric irio iroc irrc irri irti itic itoi itoo itor itri itto izzo occc occi occt ocro ocrr oct- octi octo oici oiii oirt oitc oiti oitz oocr oooo oort oozi orci orco ori- oric orio orit oro- oror orot oroz orri orro ortc orto orzo otic otit oto- otoo otor otro otti otto otzi rccc rcic rctc rcti ricc rico rict riot rioz riri riti rito ritt ritz rizi rizz rocc roco roio roir roit roiz rooi roor root rooz rorc rori roro rort rotc roti roto rotr rott rozi rozz rrrr rtcc tccc tctc ticc tico tiit tiri tiro tirr titc titi tito titt titz tizi tizz toci toco toit toor toot torc tori toro torr tort totc toti toto totr tott tozo trcc tri- tric trio trit triz troc troi troo trot trtc trtr tttt tzzt z-ro zico zirc ziri ziro ziti zito zizi zizz zoco zoic zoio zoo- zoot zorc zori zoro zort zoti zott zotz zozo zzzz