-al -ol a-a a-t aaa aad aaf aal aao aat aax ad- ada add adf adl ado adt adx af- afa afd aff afl afo aft afx al- ala ald alf all alo alt alx aoa aod aof aol aoo aot aox at- ata atd atf atl ato att atx ax- axa axl axo axt axx daa dad daf dal dao dat dax dda ddd ddf ddl ddo ddt ddx dfa dfd dff dfl dfo dft dfx dl- dla dld dlf dll dlo dlt dlx doa dod dof dol doo dot dox dta dtd dtf dtl dto dtt dtx dxd dxl dxo dxt dxx faa fad faf fal fao fat fax fda fdd fdf fdl fdo fdt fdx ffa ffd fff ffl ffo fft ffx fla fld flf fll flo flt flx foa fof fol foo fot fox fta ftd ftf ftl fto ftt ftx fxt fxx la- laa lad laf lal lao lat lax lda ldd ldf ldl ldo ldt lfa lfd lff lfl lfo lft lfx lla lld llf lll llo llt loa lod lof lol loo lot lox lta ltd ltf ltl lto ltt ltx lxd lxo lxx oaa oad oaf oal oao oat oax oda odd odf odl odo odt of- ofa ofd off ofl ofo oft ofx ola old olf oll olo olt oo- ooa ood oof ool ooo oot oox ot- ota otd otf otl oto ott ox- oxa oxf oxo oxt oxx t-x taa tad taf tal tao tat tax tda tdd tdf tdl tdo tdt tdx tfa tfd tff tfl tfo tft tfx tla tld tlf tll tlo tlt tlx to- toa tod tof tol too tot tox tta ttd ttf ttl tto ttt ttx txf txl txt xaa xad xaf xal xat xda xdf xdt xfa xfl xft xfx xla xld xlf xlt xoa xod xof xoo xot xox xtf xtx xxl xxo xxx