a-a a-c aaa aac aad aar aaw ac- aca acc acd acr acw ad- ada adc add adr adw ar- ara arc ard arr arw aw- awa awc awd awr aww c-- caa cac cad car caw cca ccc ccd ccr ccw cda cdc cdd cdr cdw cra crc crd crr crw cw- cwa cwc cwd cwr daa dac dad dar daw dca dcc dcd dcr dcw dda ddc ddd ddr ddw dra drc drd drr drw dwa dwc dwr dww ra- raa rac rad rar raw rca rcc rcd rcr rcw rda rdc rdd rdr rra rrc rrd rrr rwa rwc rwd rwr waa wac wad war waw wca wcc wcd wcr wcw wda wdc wdr wr- wra wrc wrd wrr wrw wwa wwc wwd www