c-cd cccc ccci cccv ccdc ccdi ccdr ccic ccid ccii ccir cciv ccrc ccri ccvi cd-r cddr cdic cdii cdiv cdvd cdvi cicc cici cicr cidc cidi cidr ciid ciii circ ciri cirr civc crcc crcr crdc cric cvcc cvid cvii cvrd cvrr dccc dcci dccv dcii dciv dcvd dcvi dddd ddrc dici didi diii diiv dird dirr divd divi dric dvdr dvi- dvii dvir iccc icci iccr icdc icdd icrc icrr idcr idic idid idir idrc idvd iicd iiii iirc ircc ircd irdc iri- iric irid irrc irri ivdr ivic rccc rcdc rcic rcid rcrd rcvr ricc ridc ridd ridi riri rrrr rv-c vcci vdcc vic- vici vidi viii virc viri virr vivi vrci vrdi vvvv