a-a a-b a-i aaa aab aag aai aan aao aap aar aas ab- aba abb abg abi abn abo abp abr abs ag- aga agb agg agi agn ago agp agr ags ai- aia aib aig aii ain aio aip air ais an- ana anb ang ani ann ano anp anr ans aoa aob aog aoi aon aoo aop aor aos ap- apa apb apg api apn apo app apr aps ar- ara arb arg ari arn aro arp arr ars as- asa asb asg asi asn aso asp asr ass b-p baa bab bag bai ban bao bap bar bas bba bbb bbg bbi bbn bbo bbp bbr bbs bga bgb bgg bgi bgn bgo bgp bgr bgs bi- bia bib big bii bin bio bip bir bis bna bnb bng bni bnn bno bnp bnr bns boa bob bog boi bon boo bop bor bos bpa bpb bpg bpi bpn bpo bpp bpr bps bra brb brg bri brn bro brp brr brs bsa bsb bsg bsi bsn bso bsp bsr bss g-p gaa gab gag gai gan gao gap gar gas gba gbg gbi gbn gbo gbp gbr gbs gga ggb ggg ggi ggn ggo ggp ggr ggs gia gib gig gii gin gio gip gir gis gna gnb gni gnn gno gnp gnr gns goa gob gog goi gon goo gop gor gos gpa gpb gpg gpi gpn gpo gpp gpr gps gra grb grg gri grn gro grp grr grs gsa gsb gsg gsi gsn gso gsp gsr gss ia- iaa iab iag iai ian iao iap iar ias iba ibb ibg ibi ibn ibo ibp ibr ibs iga igb igg igi ign igo igp igr igs iia iib iii iin iio iip iir iis in- ina inb ing ini inn ino inp inr ins io- ioa iob iog ioi ion ioo iop ior ios ipa ipb ipg ipi ipn ipo ipp ipr ips ir- ira irb irg iri irn iro irp irr irs is- isa isb isg isi isn iso isp isr iss n-i naa nab nag nai nan nao nap nar nas nba nbb nbg nbi nbn nbo nbp nbr nbs nga ngb ngg ngi ngn ngo ngp ngs nia nib nig nii nin nio nip nir nis nna nnb nng nni nnn nno nnp nns no- noa nob nog noi non noo nop nor nos npa npb npg npi npn npo npp npr nps nra nrb nrg nri nrn nro nrp nrr nrs nsa nsb nsg nsi nsn nso nsp nsr nss o-i oaa oab oag oai oan oao oap oar oas ob- oba obb obg obi obn obo obp obr obs oga ogg ogi ogn ogo ogp ogs oia oib oii oin oio oip oir ois on- ona onb ong oni onn ono onp onr ons oo- ooa oob oog ooi oon ooo oop oor oos op- opa opb opg opi opn opo opp opr ops or- ora orb org ori orn oro orp orr ors os- osa osb osg osi osn oso osp osr oss p-p paa pab pag pai pan pao pap par pas pba pbb pbg pbi pbn pbo pbp pbr pbs pga pgb pgg pgi pgn pgo pgp pgr pgs pia pib pig pii pin pio pip pir pis pn- pna pnb png pni pnn pno pnp pnr pns poa pob pog poi pon poo pop por pos ppa ppb ppg ppi ppn ppo ppp ppr pps pra prb prg pri prn pro prp prr prs ps- psa psb psg psi psn pso psp psr pss ra- raa rab rag rai ran rao rap rar ras rba rbb rbg rbi rbn rbo rbp rbr rbs rga rgb rgg rgi rgn rgo rgp rgr rgs ria rib rig rii rin rio rip rir ris rna rnb rng rni rnn rno rnp rnr rns roa rob rog roi ron roo rop ror ros rpa rpb rpg rpi rpn rpo rpp rpr rps rra rrb rrg rri rrn rrp rrr rrs rsa rsb rsg rsi rsn rso rsp rsr rss saa sab sag sai san sao sap sar sas sba sbb sbg sbi sbn sbo sbp sbr sbs sga sgb sgg sgi sgn sgo sgp sgr sgs sia sib sig sii sin sio sip sir sis sna snb sng sni snn sno snp snr sns soa sob sog soi son soo sop sor sos spa spb spg spi spn spo spp spr sps sr- sra srb srg sri srn sro srp srr srs ss- ssa ssb ssg ssi ssn sso ssp ssr sss