c-cd cccc cccf cccl ccdc ccdf ccdn ccdr ccfc ccfd ccff ccfl cclc ccnc ccnf ccnr ccrc ccrf ccrl ccrt cctc cctl cctt cd-r cddl cddr cdnc cdnf cfcf cfcl cfcn cffr cfln cfnr cfrn cfrt cftc cftl cftr clcd cldc cldr clrd cltc cndd cnrc cnrr cnrt cntc cntf cntr crcc crcr crdc crfc crfl crlf crrt crtc crtf crtl ctcf ctfc ctrc ctrl ctrn cttn dccc dccl dcct dcfc dctc dddd ddlc ddrc dfcc dfdt dfrf dftr dnrc dntt drfc dtcc dtfc dtrl fccf fcnl fdlr fdtc fdtl ffcc ffff ffrr fftf flcl fldr flnc fndd fndn fndr fnlc frcc frcn frfc ft-c ft-l ftcd ftfc lccc lcdd lcdr lcfc lcfr lcrd lcrl lctl ldcf lfcc lfrd llcc lldc lllc llll lncr lndn lntc lrdd lrfc lrrc lrrr ltcc ltfc ltnt lttc lttr nccc nccf nccn nccr ncct ncdc ncdn ncdr ncfc nclc ncln nclr ncnc ncnd ncrc nctc nctr ndcc ndnt ndrc ndrf ndtc nfct nfdc nfff nfld nftc nlcc nlcf nnnn nntn nrdc nrfc nrrc nrrd nrrl nrtl ntcc ntfc ntfl ntnd ntrc ntrl nttr rccc rcdc rcfc rcnl rcnr rcrd rctc rffc rffl rftc rldt rndc rndf rnld rnnt rntd rrfc rrrr rtcc rtdt rtfc rtlt rtnd tccc tcdd tcfc tcnn tctc tdff tfdc tftc tldr tncc tndd tndf tnfc tnfl trcc trcl trfc trfd trfr trtc trtr ttcn ttfc ttff ttfn tttt