-th fff ffh ffi ffo fft ffx fhf fhh fhi fho fif fih fii fit fix fof foh foi foo fot fox ftf fth fti fto ftt ftx fxi fxt fxx h-i hff hfh hfi hfo hft hhf hhh hhi hho hht hif hih hii hio hit hix hof hoh hoi hoo hot hox htf hth hti hto htt htx i-f iff ifi ifo ift ifx ihf ihh ihi iho iht iif iih iii iio iit iix io- iof ioh ioi ioo iot itf ith iti ito itt itx ixi o-i of- off ofi ofo oft ofx ohf ohh ohi oho oht oif oii oio oit oo- oof ooh ooi ooo oot oox ot- otf oth oti oto ott ox- oxf oxi oxo oxt oxx t-x tff tfh tfi tfo tft tfx th- thf thh thi tho tht thx tif tih tii tio tit tix to- tof toh toi too tot tox ttf tth tti tto ttt ttx txf txi txt xfh xft xfx xht xii xio xit xix xof xoi xoo xot xox xtf xti xtx xxi xxo xxx