-al -ol a-a a-t aaa aaf aal aao aas aat aax af- afa aff afl afo afs aft afx al- ala alf all alo als alt alx aoa aof aol aoo aos aot aox as- asa asf asl aso ass ast asx at- ata atf atl ato ats att atx ax- axa axl axo axs axt axx faa faf fal fao fas fat fax ffa fff ffl ffo ffs fft ffx fla flf fll flo fls flt flx foa fof fol foo fos fot fox fsa fsf fsl fso fss fst fsx fta ftf ftl fto fts ftt ftx fxs fxt fxx la- laa laf lal lao las lat lax lfa lff lfl lfo lfs lft lfx lla llf lll llo lls llt loa lof lol loo los lot lox lsa lsf lsl lso lss lst lta ltf ltl lto lts ltt ltx lxo lxx oaa oaf oal oao oas oat oax of- ofa off ofl ofo ofs oft ofx ola olf oll olo ols olt oo- ooa oof ool ooo oos oot oox os- osa osf osl oso oss ost osx ot- ota otf otl oto ots ott ox- oxa oxf oxo oxt oxx saa saf sal sao sas sat sax sfa sff sfl sfo sfs sft sfx sla slf sll slo sls slt slx soa sof sol soo sos sot sox ss- ssa ssf ssl sso sss sst ssx sta stf stl sto sts stt stx sxl sxs sxt t-x taa taf tal tao tas tat tax tfa tff tfl tfo tfs tft tfx tla tlf tll tlo tls tlt tlx to- toa tof tol too tos tot tox tsa tsf tsl tso tss tst tsx tta ttf ttl tto tts ttt ttx txf txl txs txt xaa xaf xal xas xat xfa xfl xfs xft xfx xla xlf xls xlt xoa xof xoo xos xot xox xsa xsl xss xst xtf xts xtx xxl xxo xxx