-ic a-a a-c a-i a-t aaa aac aad aai aar aas aat ac- aca acc acd aci acr acs act ad- ada adc add adi adr ads adt ai- aia aic aid aii air ais ait ar- ara arc ard ari arr ars art as- asa asc asd asi asr ass ast at- ata atc atd ati atr ats att c-- caa cac cad cai car cas cat cca ccc ccd cci ccr ccs cct cda cdc cdd cdi cdr cds cdt ci- cia cic cid cii cir cis cit cra crc crd cri crr crs crt csa csc csd csi csr css cst cta ctc ctd cti ctr cts ctt daa dac dad dai dar das dat dca dcc dcd dci dcr dcs dct dda ddc ddd ddi ddr dds ddt di- dia dic did dii dir dis dit dra drc drd dri drr drs drt dsa dsc dsd dsi dsr dss dst dta dtc dtd dti dtr dts dtt i-d ia- iaa iac iad iai iar ias iat ica icc icd ici icr ics ict ida idc idd idi idr ids idt iia iic iid iii iir iis iit ir- ira irc ird iri irr irs irt is- isa isc isd isi isr iss ist ita itc itd iti its itt ra- raa rac rad rai rar ras rat rca rcc rcd rci rcr rcs rct rda rdc rdd rdi rdr rds rdt ria ric rid rii rir ris rit rra rrc rrd rri rrr rrs rrt rsa rsc rsd rsi rsr rss rst rta rtc rtd rti rtr rts rtt saa sac sad sai sar sas sat sca scc scd sci scr scs sct sda sdc sdd sdi sdr sds sdt sia sic sid sii sir sis sit sr- sra src srd sri srr srs srt ss- ssa ssc ssd ssi ssr sss sst sta stc std sti str sts stt taa tac tad tai tar tas tat tca tcc tcd tci tcr tcs tct tda tdc tdd tdi tdr tds tdt tia tic tid tii tir tis tit tra trc trd tri trr trs trt tsa tsc tsd tsi tsr tss tst tta ttc ttd tti ttr tts ttt