c-- ccc ccf ccl ccn ccs cct cfc cff cfl cfn cfs cft cl- clc clf cll cln cls clt cn- cnc cnf cnl cnn cns cnt csc csf csl csn css cst ctc ctf ctl ctn cts ctt fcc fcf fcl fcn fcs fct ffc fff ffl ffn ffs fft flc flf fll fln fls flt fnc fnf fnl fnn fns fnt fsc fsf fsl fsn fss fst ftc ftf ftl ftn fts ftt lcc lcf lcl lcn lcs lct lfc lff lfl lfn lfs lft llc llf lll lln lls llt lnc lnl lnn lns lnt lsc lsf lsl lsn lss lst ltc ltf ltl lts ltt ncc ncf ncl ncn ncs nct nfc nff nfl nfn nfs nft nlc nlf nll nln nls nlt nnc nnf nnl nnn nns nnt nsc nsf nsl nsn nss nst ntc ntf ntn nts ntt scc scf scl scn scs sct sfc sff sfl sfn sfs sft slc slf sll sln sls slt snc snf snl snn sns snt ss- ssc ssf ssl ssn sss sst stc stf stl stn sts stt tcc tcf tcl tcn tcs tct tfc tff tfl tfn tfs tft tlc tlf tll tln tls tlt tnc tnf tnl tnn tns tnt tsc tsf tsl tsn tss tst ttc ttf ttl ttn tts ttt