a-a a-c aaa aac aad aam aas ac- aca acc acd acm acs ad- ada adc add adm ads ama amc amd amm ams as- asa asc asd asm ass c-- caa cac cad cam cas cca ccc ccd ccm ccs cda cdc cdd cdm cds cma cmc cmd cmm cms csa csc csd csm css daa dac dad dam das dca dcc dcd dcm dcs dda ddc ddd ddm dds dma dmc dmd dmm dms dsa dsc dsd dsm dss maa mac mad mam mas mc- mca mcc mcd mcm mcs mda mdc mdd mdm mds mma mmc mmd mmm mms msa msc msd msm mss saa sac sad sam sas sca scc scd scm scs sda sdc sdd sdm sds sma smc smd smm sms ss- ssa ssc ssd ssm sss