-al a-a aaa aad aae aaf aal aax ad- ada add ade adf adl adx aea aed aee aef ael aex af- afa afd afe aff afl afx al- ala ald ale alf all alx ax- axa axe axl axx daa dad dae daf dal dax dda ddd dde ddf ddl ddx de- dea ded dee def del dex dfa dfd dfe dff dfl dfx dl- dla dld dle dlf dll dlx dxd dxl dxx eaa ead eae eaf eal eax ed- eda edd ede edf edl edx eea eed eee eef eel eex ef- efa efd efe eff efl efx ela eld ele elf ell elx ex- exa exd exe exl exx faa fad fae faf fal fax fda fdd fde fdf fdl fdx fea fed fee fef fel fex ffa ffd ffe fff ffl ffx fla fld fle flf fll flx fxe fxx la- laa lad lae laf lal lax lda ldd lde ldf ldl lea led lee lef lel lex lfa lfd lfe lff lfl lfx lla lld lle llf lll lxd lxx xaa xad xaf xal xda xde xdf xed xee xel xex xfa xfe xfl xfx xla xld xlf xxl xxx