fff ffi ffn ffo ffr ffs fft ffx fif fii fin fiq fir fis fit fix fnf fni fnn fnr fns fnt fnx fof foi fon foo for fos fot fox fqt fqx frf fri frn fro frq frr frs frt fsf fsi fsn fso fsq fsr fss fst fsx ftf fti ftn fto ftq ftr fts ftt ftx fxi fxr fxs fxt fxx i-f iff ifi ifn ifo ifr ifs ift ifx iif iii iin iio iir iis iit iix in- inf ini inn ino inq inr ins int inx io- iof ioi ion ioo ior ios iot iqs iqt ir- irf iri irn iro irq irr irs irt irx is- isf isi isn iso isq isr iss ist itf iti itn ito itq its itt itx ixi ixn n-i nff nfi nfn nfo nfr nfs nft nif nii nin nio niq nir nis nit nix nnf nni nnn nno nns nnt no- nof noi non noo nor nos not nox nqs nqt nrf nri nrn nro nrr nrs nrt nrx nsf nsi nsn nso nsr nss nst nsx ntf nti ntn nto ntq ntr nts ntt ntx nxt o-i of- off ofi ofn ofo ofr ofs oft ofx oif oii oin oio oir ois oit on- onf oni onn ono onr ons ont onx oo- oof ooi oon ooo oor oos oot oox oqo or- orf ori orn oro orr ors ort orx os- osf osi osn oso osq osr oss ost osx ot- otf oti otn oto otr ots ott ox- oxf oxi oxn oxo oxt oxx qff qfi qfs qft qfx qin qio qir qis qit qix qni qns qnx qof qoi qoo qor qos qqq qri qrs qrt qsi qso qsr qst qti qto qtq qtr qts rff rfi rfn rfo rfq rfr rfs rft rif rii rin rio riq rir ris rit rix rni rnn rno rnr rns rnt rof roi ron roo ror ros rot rox rqn rqs rrf rri rrn rrq rrr rrs rrt rsf rsi rsn rso rsq rsr rss rst rsx rtf rti rtn rto rtq rtr rts rtt rtx rxr rxs sff sfi sfn sfo sfr sfs sft sfx sif sii sin sio siq sir sis sit six snf sni snn sno snr sns snt sof soi son soo soq sor sos sot sox sqi sqn sqq sqr sqs sqx sr- srf sri srn sro srq srr srs srt srx ss- ssf ssi ssn sso ssq ssr sss sst ssx stf sti stn sto stq str sts stt stx sxi sxn sxs sxt t-x tff tfi tfn tfo tfr tfs tft tfx tif tii tin tio tir tis tit tix tnf tni tnn tno tnq tnr tns tnt tnx to- tof toi ton too toq tor tos tot tox tqo trf tri trn tro trq trr trs trt trx tsf tsi tsn tso tsq tsr tss tst tsx ttf tti ttn tto ttr tts ttt ttx txf txi txn txs txt xfn xfs xft xfx xii xin xio xis xit xix xno xns xof xoi xon xoo xor xos xot xox xqt xrf xrt xrx xsi xss xst xtf xti xtr xts xtx xxi xxo xxx