-ic c-- ccc ccd cci ccr ccs cct ccu cdc cdd cdi cdr cds cdt cdu ci- cic cid cii cir cis cit ciu crc crd cri crr crs crt cru csc csd csi csr css cst csu ctc ctd cti ctr cts ctt ctu cuc cud cui cur cus cut cuu dcc dcd dci dcr dcs dct dcu ddc ddd ddi ddr dds ddt ddu di- dic did dii dir dis dit diu drc drd dri drr drs drt dru dsc dsd dsi dsr dss dst dsu dtc dtd dti dtr dts dtt dtu duc dud dui dur dus dut i-d icc icd ici icr ics ict icu idc idd idi idr ids idt idu iic iid iii iir iis iit iiu ir- irc ird iri irr irs irt iru is- isc isd isi isr iss ist isu itc itd iti its itt itu iu- iuc iud iui iur ius iut rcc rcd rci rcr rcs rct rcu rdc rdd rdi rdr rds rdt rdu ric rid rii rir ris rit rrc rrd rri rrr rrs rrt rru rsc rsd rsi rsr rss rst rsu rtc rtd rti rtr rts rtt rtu ruc rud rui rur rus rut ruu scc scd sci scr scs sct scu sdc sdd sdi sdr sds sdt sdu sic sid sii sir sis sit siu sr- src srd sri srr srs srt ss- ssc ssd ssi ssr sss sst ssu stc std sti str sts stt stu suc sud sui sur sus sut suu tcc tcd tci tcr tcs tct tcu tdc tdd tdi tdr tds tdt tdu tic tid tii tir tis tit tiu trc trd tri trr trs trt tru tsc tsd tsi tsr tss tst tsu ttc ttd tti ttr tts ttt ttu tuc tud tui tur tus tut tuu ucc ucd uci ucr ucs uct ucu udc udd udi udr uds udt udu uic uid uii uir uis uit uiu ur- urc urd uri urr urs urt uru usc usd usi usr uss ust usu utc utd uti utr uts utt utu uuc uur uus uut uuu