fff ffi ffk ffn ffr ffs ffu fif fii fik fin fir fis fiu fkf fki fkk fnf fni fnk fnn fnr fns fnu frf fri frk frn frr frs fru fsf fsi fsk fsn fsr fss fsu fuf fui fuk fun fur fus fuu i-f iff ifi ifn ifr ifs ifu iif iii iin iir iis iiu ikf iki ikk ikr iks iku in- inf ini ink inn inr ins inu ir- irf iri irk irn irr irs iru is- isf isi isk isn isr iss isu iu- iui iur ius kff kfi kfs kfu kif kii kik kin kir kis kiu kki kkk kkn kkr kks kku kn- knf kni knk knn knr knu krf kri krk krn krr krs kru ksf ksi ksk ksn ksr kss ksu kui kuk kun kur kus kuu n-i nff nfi nfk nfn nfr nfs nfu nif nii nik nin nir nis niu nkf nki nkk nkn nkr nks nku nnf nni nnk nnn nns nnu nrf nri nrk nrn nrr nrs nru nsf nsi nsk nsn nsr nss nsu nui nuk nun nur nus nuu rff rfi rfk rfn rfr rfs rfu rif rii rik rin rir ris rkf rkk rks rku rni rnn rnr rns rnu rrf rri rrk rrn rrr rrs rru rsf rsi rsk rsn rsr rss rsu ruf rui ruk run rur rus ruu sff sfi sfk sfn sfr sfs sfu sif sii sik sin sir sis siu sk- skf ski skk skr sks sku snf sni snk snn snr sns snu sr- srf sri srk srn srr srs ss- ssf ssi ssk ssn ssr sss ssu suf sui suk sun sur sus suu uff ufi ufn ufr ufs ufu uif uii uin uir uis uiu ukf uki ukk ukn ukr uku un- unf uni unk unn unr uns unu ur- urf uri urk urn urr urs uru usf usi usk usn usr uss usu uun uur uus uuu