-ic c-- ccc ccd cci cco ccr ccs cct cdc cdd cdi cdo cdr cds cdt ci- cic cid cii cio cir cis cit co- coc cod coi coo cor cos cot crc crd cri cro crr crs crt csc csd csi cso csr css cst ctc ctd cti cto ctr cts ctt dcc dcd dci dco dcr dcs dct ddc ddd ddi ddo ddr dds ddt di- dic did dii dio dir dis dit doc dod doi doo dor dos dot drc drd dri dro drr drs drt dsc dsd dsi dso dsr dss dst dtc dtd dti dto dtr dts dtt i-d icc icd ici ico icr ics ict idc idd idi ido idr ids idt iic iid iii iio iir iis iit io- ioc iod ioi ioo ior ios iot ir- irc ird iri iro irr irs irt is- isc isd isi iso isr iss ist itc itd iti ito its itt o-i oc- occ ocd oci oco ocr ocs oct odc odd odi odo odr ods odt oic oid oii oio oir ois oit oo- ooc ood ooi ooo oor oos oot or- orc ord ori oro orr ors ort os- osc osd osi oso osr oss ost ot- otc otd oti oto otr ots ott rcc rcd rci rco rcr rcs rct rdc rdd rdi rdo rdr rds rdt ric rid rii rio rir ris rit roc rod roi roo ror ros rot rrc rrd rri rrr rrs rrt rsc rsd rsi rso rsr rss rst rtc rtd rti rto rtr rts rtt scc scd sci sco scr scs sct sdc sdd sdi sdo sdr sds sdt sic sid sii sio sir sis sit soc sod soi soo sor sos sot sr- src srd sri sro srr srs srt ss- ssc ssd ssi sso ssr sss sst stc std sti sto str sts stt tcc tcd tci tco tcr tcs tct tdc tdd tdi tdo tdr tds tdt tic tid tii tio tir tis tit to- toc tod toi too tor tos tot trc trd tri tro trr trs trt tsc tsd tsi tso tsr tss tst ttc ttd tti tto ttr tts ttt