a-a a-i aaa aaf aag aai aan aao aap aar af- afa aff afg afi afn afo afp afr ag- aga agf agg agi agn ago agp agr ai- aia aif aig aii ain aio aip air an- ana anf ang ani ann ano anp anr aoa aof aog aoi aon aoo aop aor ap- apa apf apg api apn apo app apr ar- ara arf arg ari arn aro arp arr faa faf fag fai fan fao fap far ffa fff ffg ffi ffn ffo ffp ffr fga fgf fgg fgi fgn fgp fgr fia fif fig fii fin fip fir fna fnf fng fni fnn fnp fnr foa fof fog foi fon foo fop for fpa fpg fpi fpn fpo fpp fpr fra frf frg fri frn fro frp frr g-p gaa gaf gag gai gan gao gap gar gfa gff gfi gfo gfp gfr gga ggg ggi ggn ggo ggp ggr gia gif gig gii gin gio gip gir gna gnf gni gnn gno gnp gnr goa gof gog goi gon goo gop gor gpa gpf gpg gpi gpn gpo gpp gpr gra grf grg gri grn gro grp grr i-f ia- iaa iaf iag iai ian iao iap iar ifa iff ifg ifi ifn ifo ifp ifr iga igf igg igi ign igo igp igr iia iif iii iin iio iip iir in- ina inf ing ini inn ino inp inr io- ioa iof iog ioi ion ioo iop ior ipa ipf ipg ipi ipn ipo ipp ipr ir- ira irf irg iri irn iro irp irr n-i naa naf nag nai nan nao nap nar nfa nff nfi nfn nfo nfp nfr nga ngf ngg ngi ngn ngo ngp nia nif nig nii nin nio nip nir nna nnf nng nni nnn nno nnp no- noa nof nog noi non noo nop nor npa npf npg npi npn npo npp npr nra nrf nrg nri nrn nro nrp nrr o-i oaa oaf oag oai oan oao oap oar of- ofa off ofg ofi ofn ofo ofp ofr oga ogf ogg ogi ogn ogo ogp oia oif oii oin oio oip oir on- ona onf ong oni onn ono onp onr oo- ooa oof oog ooi oon ooo oop oor op- opa opf opg opi opn opo opp opr or- ora orf org ori orn oro orp orr p-p paa paf pag pai pan pao pap par pfa pff pfg pfi pfn pfo pfp pfr pga pgf pgg pgi pgn pgo pgp pgr pia pif pig pii pin pio pip pir pn- pna pnf png pni pnn pno pnp pnr poa pof pog poi pon poo pop por ppa ppf ppg ppi ppn ppo ppp ppr pra prf prg pri prn pro prp prr ra- raa raf rag rai ran rao rap rar rfa rff rfg rfi rfn rfo rfp rfr rga rgf rgg rgi rgn rgo rgp rgr ria rif rig rii rin rio rip rir rna rng rni rnn rno rnp rnr roa rof rog roi ron roo rop ror rpa rpf rpg rpi rpn rpo rpp rpr rra rrf rrg rri rrn rrp rrr