-th a-a a-c a-t aaa aac aad aah aar aat ac- aca acc acd ach acr act ad- ada adc add adh adr adt aha ahc ahd ahh ahr aht ar- ara arc ard arh arr art at- ata atc atd ath atr att c-- caa cac cad cah car cat cca ccc ccd cch ccr cct cda cdc cdd cdh cdr cdt ch- cha chc chd chh chr cht cra crc crd crh crr crt cta ctc ctd cth ctr ctt daa dac dad dah dar dat dca dcc dcd dcr dct dda ddc ddd ddh ddr ddt dh- dha dhc dhd dhh dhr dht dra drc drd drr drt dta dtc dtd dth dtr dtt haa hac had hah har hat hca hcc hcd hch hcr hct hda hdc hdd hdh hdr hdt hha hhc hhd hhh hhr hht hr- hra hrc hrd hrh hrr hrt hta htc htd hth htr htt ra- raa rac rad rah rar rat rca rcc rcd rch rcr rct rda rdc rdd rdh rdr rdt rh- rha rhc rhd rhh rhr rht rra rrc rrd rrh rrr rrt rta rtc rtd rtr rtt taa tac tad tah tar tat tca tcc tcd tch tcr tct tda tdc tdd tdh tdr tdt th- tha thc thd thh thr tht tra trc trd trh trr trt tta ttc ttd tth ttr ttt