-ic c-- ccc ccg cci ccn ccr ccs cct cgc cgg cgi cgn cgr cgs cgt ci- cic cig cii cin cir cis cit cn- cnc cng cni cnn cnr cns cnt crc crg cri crn crr crs crt csc csg csi csn csr css cst ctc ctg cti ctn ctr cts ctt gcc gcg gci gcn gcr gcs gct ggc ggg ggi ggn ggr ggs ggt gic gig gii gin gir gis git gnc gni gnn gnr gns gnt grc grg gri grn grr grs grt gsc gsg gsi gsn gsr gss gst gtc gtg gti gtn gtr gts gtt icc icg ici icn icr ics ict igc igg igi ign igr igs igt iic iii iin iir iis iit in- inc ing ini inn inr ins int ir- irc irg iri irn irr irs irt is- isc isg isi isn isr iss ist itc itg iti itn its itt n-i ncc ncg nci ncn ncr ncs nct ngc ngg ngi ngn ngs ngt nic nig nii nin nir nis nit nnc nng nni nnn nns nnt nrc nrg nri nrn nrr nrs nrt nsc nsg nsi nsn nsr nss nst ntc ntg nti ntn ntr nts ntt rcc rcg rci rcn rcr rcs rct rgc rgg rgi rgn rgr rgs rgt ric rig rii rin rir ris rit rnc rng rni rnn rnr rns rnt rrc rrg rri rrn rrr rrs rrt rsc rsg rsi rsn rsr rss rst rtc rtg rti rtn rtr rts rtt scc scg sci scn scr scs sct sgc sgg sgi sgn sgr sgs sgt sic sig sii sin sir sis sit snc sng sni snn snr sns snt sr- src srg sri srn srr srs srt ss- ssc ssg ssi ssn ssr sss sst stc stg sti stn str sts stt tcc tcg tci tcn tcr tcs tct tgc tgg tgi tgn tgr tgs tgt tic tig tii tin tir tis tit tnc tng tni tnn tnr tns tnt trc trg tri trn trr trs trt tsc tsg tsi tsn tsr tss tst ttc ttg tti ttn ttr tts ttt