a-ha aaaa aaac aaae aaaf aaah aaca aacc aace aacf aach aaea aaec aafa aafc aaff aaha acaa acac acae acca accc acce accf acch ace- acea acec aceh acfc acfe acha ache achh aeac aeaf afaa afca afcc afch afee affa affc ahac ahah ahfa ahha caaa caac caaf caah cac- caca cacc cace cach caec cafa cafc cafe caff caha cahe ccaa ccac ccaf ccca cccc cccf ccee ccfa ccfc ccff ccha cche ceac cec- ceca cece ceec cef- cefa cefc cfaa cfac cfae cfca cfcf chaa chac chae chaf chah chca chce chch chea chec chee chef cheh chfa chfc chha eaaf eaca eacc each eaec ecaa ecac ecca eccc ecce ecef ecfa ecfc echa eche eeca eeea eeee eefa eefe efca effa ehaa ehcc ehea eheh faaa faac faah faca facc face fach fafa fafc fafe faff faha fcca fccf fcch feaf fece fech fefc fefe feff ffcc ffee ffff haaf hace haec hafe haff haha hcca hccc hcch hcfa hcfc heaf heah heca hech heef hefe hehe hfce hhaa hhhh