a-a a-c aaa aac aam aap aas ac- aca acc acm acp acs ama amc amm amp ams ap- apa apc apm app aps as- asa asc asm asp ass c-- caa cac cam cap cas cca ccc ccm ccp ccs cma cmc cmm cmp cms cpa cpc cpm cpp cps csa csc csm csp css maa mac mam map mas mc- mca mcc mcm mcp mcs mma mmc mmm mmp mms mpa mpc mpm mpp mps msa msc msm msp mss p-p paa pac pam pap pas pca pcc pcm pcp pcs pma pmc pmm pmp pms ppa ppc ppm ppp pps ps- psa psc psm psp pss saa sac sam sap sas sca scc scm scp scs sma smc smm smp sms spa spc spm spp sps ss- ssa ssc ssm ssp sss