aaaa aaac aaad aaal aaca aacc aacd aacl aada aadc aala aalc aald aall acaa acac acad acca accc accd acda acdc acla aclc adaa adac adad adal adcc adda addc addd addl alaa alac alad alal alca alcc ald- alda aldl all- alla alll c-cd caaa caac caal cac- caca cacc cada cadc cadd cala calc cald call ccaa ccac ccad ccca cccc cccl ccdc ccla cclc cdaa cdac cdad cdda cddl clad clcd cldc daad daal daca dada dala dall dcca dccc dccl dddd ddlc laaa laac laad laal laca lacc lacl lada ladd lala lald lall lcac lcad lcca lccc lcdd llcc lldc lllc llll