a-a a-i a-t aaa aaf aai aao aar aat aax af- afa aff afi afo afr aft afx ai- aia aif aii aio air ait aix aoa aof aoi aoo aor aot aox ar- ara arf ari aro arr art arx at- ata atf ati ato atr att atx ax- axa axi axo axr axt axx faa faf fai fao far fat fax ffa fff ffi ffo ffr fft ffx fia fif fii fir fit fix foa fof foi foo for fot fox fra frf fri fro frr frt fta ftf fti fto ftr ftt ftx fxi fxr fxt fxx i-f ia- iaa iaf iai iao iar iat ifa iff ifi ifo ifr ift ifx iia iif iii iio iir iit iix io- ioa iof ioi ioo ior iot ir- ira irf iri iro irr irt irx ita itf iti ito itt itx ixi o-i oaa oaf oai oao oar oat oax of- ofa off ofi ofo ofr oft ofx oia oif oii oio oir oit oo- ooa oof ooi ooo oor oot oox or- ora orf ori oro orr ort orx ot- ota otf oti oto otr ott ox- oxa oxf oxi oxo oxt oxx ra- raa raf rai rao rar rat rax rfa rff rfi rfo rfr rft ria rif rii rio rir rit rix roa rof roi roo ror rot rox rra rrf rri rrr rrt rta rtf rti rto rtr rtt rtx rxr t-x taa taf tai tao tar tat tax tfa tff tfi tfo tfr tft tfx tia tif tii tio tir tit tix to- toa tof toi too tor tot tox tra trf tri tro trr trt trx tta ttf tti tto ttr ttt ttx txf txi txt xaa xaf xar xat xfa xft xfx xia xii xio xit xix xoa xof xoi xoo xor xot xox xrf xrt xrx xtf xti xtr xtx xxi xxo xxx