fff ffi ffk ffn ffo ffp ffr fft fif fii fik fin fip fir fit fkf fki fkk fkp fkt fnf fni fnk fnn fnp fnr fnt fof foi fok fon foo fop for fot fpi fpk fpn fpo fpp fpr fpt frf fri frk frn fro frp frr frt ftf fti ftk ftn fto ftp ftr ftt i-f iff ifi ifn ifo ifp ifr ift iif iii iin iio iip iir iit ikf iki ikk iko ikr ikt in- inf ini ink inn ino inp inr int io- iof ioi ion ioo iop ior iot ipf ipi ipn ipo ipp ipr ipt ir- irf iri irk irn iro irp irr irt itf iti itk itn ito itp itt k-t kff kfi kfo kif kii kik kin kio kip kir kit kki kkk kkn kkp kkr kkt kn- knf kni knk knn kno knp knr knt kof koi kok kon koo kop kor kot kpf kpi kpk kpn kpo kpp kpr kpt krf kri krk krn kro krp krr krt ktf ktk ktn kto ktp ktr ktt n-i nff nfi nfk nfn nfo nfp nfr nft nif nii nik nin nio nip nir nit nkf nki nkk nkn nko nkp nkr nkt nnf nni nnk nnn nno nnp nnt no- nof noi nok non noo nop nor not npf npi npn npo npp npr npt nrf nri nrk nrn nro nrp nrr nrt ntf nti ntk ntn nto ntp ntr ntt o-i of- off ofi ofn ofo ofp ofr oft oif oii oik oin oio oip oir oit oki okk oko okp okr on- onf oni onk onn ono onp onr ont oo- oof ooi ook oon ooo oop oor oot op- opf opi opk opn opo opp opr opt or- orf ori ork orn oro orp orr ort ot- otf oti otk otn oto otp otr ott p-p pff pfi pfk pfn pfo pfp pfr pft pif pii pik pin pio pip pir pit pkf pki pkn pko pkp pkr pkt pn- pnf pni pnk pnn pno pnp pnr pnt pof poi pok pon poo pop por pot ppf ppi ppk ppn ppo ppp ppr ppt prf pri prk prn pro prp prr prt pt- ptf pti ptk ptn pto ptp ptr ptt rff rfi rfk rfn rfo rfp rfr rft rif rii rik rin rio rip rir rit rkf rkk rko rkp rkt rni rnn rno rnp rnr rnt rof roi rok ron roo rop ror rot rpf rpi rpk rpn rpo rpp rpr rpt rrf rri rrk rrn rrp rrr rrt rtf rti rtk rtn rto rtp rtr rtt tff tfi tfk tfn tfo tfp tfr tft tif tii tik tin tio tip tir tit tkk tko tkp tkr tkt tnf tni tnk tnn tno tnp tnr tnt to- tof toi tok ton too top tor tot tpf tpi tpk tpn tpo tpp tpr tpt trf tri trk trn tro trp trr trt ttf tti ttk ttn tto ttp ttr ttt