-al a-a a-c aaa aac aad aae aal aax ac- aca acc acd ace acl acx ad- ada adc add ade adl adx aea aec aed aee ael aex al- ala alc ald ale all alx ax- axa axe axl axx c-- caa cac cad cae cal cax cca ccc ccd cce ccl ccx cda cdc cdd cde cdl cdx ce- cea cec ced cee cel cex cl- cla clc cld cle cll clx cxc cxl cxx daa dac dad dae dal dax dca dcc dcd dce dcl dcx dda ddc ddd dde ddl ddx de- dea dec ded dee del dex dl- dla dlc dld dle dll dlx dxc dxd dxl dxx eaa eac ead eae eal eax ec- eca ecc ecd ece ecl ecx ed- eda edc edd ede edl edx eea eec eed eee eel eex ela elc eld ele ell elx ex- exa exc exd exe exl exx la- laa lac lad lae lal lax lca lcc lcd lce lcl lcx lda ldc ldd lde ldl lea lec led lee lel lex lla llc lld lle lll lxc lxd lxx xaa xac xad xal xcd xcl xcx xda xdc xde xed xee xel xex xla xld xxl xxx