a-a a-c aaa aac aap aaw aax aay ac- aca acc acp acw acx acy ap- apa apc app apw apx apy aw- awa awc awp aww awy ax- axa axp axx ay- aya ayc ayp ayw ayx c-- caa cac cap caw cax cay cca ccc ccp ccw ccx cpa cpc cpp cpw cpx cw- cwa cwc cwp cxc cxp cxx cya cyc cyp cyw p-p paa pac pap paw pax pay pca pcc pcp pcw pcx ppa ppc ppp ppw ppx pwa pwc pwp pxc py- pya pyc pyx waa wac wap waw wax way wca wcc wcp wcw wcx wpa wpc wpp wpx wpy wwa wwc wwp www wxc wxp wxw wxy wy- wya wyc wyp xaa xac xap xcp xcx xpa xpc xpp xpw xwa xwp xxp xxx xxy xyp xyy yaa yac yap yaw yax yay yca ycc ycp ycw ycy ypa ywc yxa yxy yyc yyy