cccc ccci cccl ccic ccii ccil cclc ccli ccoc cctc cctl cctt cicc cici cico cict ciii ciit cili cill cilo cilt citi citl cito citt clic clii clio clit cloo clot cltc coco coct coil coit col- coli coll colo colt cool coot cotc coti coto cott ctic ctol ctot iccc icci iccl icco icct icll icoc iiii iiio iiit iioi iioo iitt ilic ilio ilit ill- illi illo illt iloc iloo ilot ioci ioii ioio ioit iolo iooi iooo ioto itic itil itll itoi itol itoo itto lccc lctl lcto lico lict liii lili lill lilo lilt lio- liti litl lito litt llcc lllc llll lloc lloo locc loci loco loic loit loli loll lolo looc lool loot loti lotl loto lott ltcc ltci lttc occc occi occt oclc oct- octi octo oici oiii oitc oiti olcc olic olio olit olli ollo olot oolo oooo otcl otic otit oto- otoo otti otto tccc tctc ticc tico tiit till tilo tilt titc titi tito titt tlco tlli toci toco toil toit tol- toli toll tolo tolt tool toot totc toti toto tott tttt