a-ha aaaa aaac aaaf aaah aaca aacc aacf aach aafa aafc aaff aagh aaha acaa acac acag acca accc accf acch acfc acga acha achh afaa afca afcc afch affa affc afgf afgh agac agag agca agcc agfa agga agha ahac ahah ahfa ahha caaa caac caaf caah cac- caca cacc cach cafa cafc caff caga cagg caha ccaa ccac ccaf ccag ccca cccc cccf ccfa ccfc ccff ccga ccgc ccha cfaa cfac cfca cfcf cgac cgcc cgcg cgfc chaa chac chaf chag chah chca chch chfa chfc chha faaa faac faah faca facc fach fafa fafc faff fafg fagg faha fcca fccf fcch ffcc ffff gach gafa gafc gaff gaga gagg gaha gc-c gcaa gccc gccf gcfc gfcf gffa gfha ggfg gggg gghg haaf haag haff hag- haga hagg hagh haha hcca hccc hcch hcfa hcfc hcgh hgah hgfc hggc hhaa hhgg hhhh