a-a a-b a-i aaa aab aag aai aan aao aap aas aax ab- aba abb abg abi abn abo abp abs abx ag- aga agb agg agi agn ago agp ags agx ai- aia aib aig aii ain aio aip ais aix an- ana anb ang ani ann ano anp ans anx aoa aob aog aoi aon aoo aop aos aox ap- apa apb apg api apn apo app aps apx as- asa asb asg asi asn aso asp ass asx ax- axa axi axn axo axp axs axx b-p baa bab bag bai ban bao bap bas bax bba bbb bbg bbi bbn bbo bbp bbs bbx bga bgb bgg bgi bgn bgo bgp bgs bgx bi- bia bib big bii bin bio bip bis bix bna bnb bng bni bnn bno bnp bns bnx boa bob bog boi bon boo bop bos box bpa bpb bpg bpi bpn bpo bpp bps bpx bsa bsb bsg bsi bsn bso bsp bss bsx bxb bxi bxn bxo bxx g-p gaa gab gag gai gan gao gap gas gba gbg gbi gbn gbo gbp gbs gbx gga ggb ggg ggi ggn ggo ggp ggs gia gib gig gii gin gio gip gis gna gnb gni gnn gno gnp gns goa gob gog goi gon goo gop gos gox gpa gpb gpg gpi gpn gpo gpp gps gpx gsa gsb gsg gsi gsn gso gsp gss gsx gxa gxp gxs ia- iaa iab iag iai ian iao iap ias iba ibb ibg ibi ibn ibo ibp ibs ibx iga igb igg igi ign igo igp igs iia iib iii iin iio iip iis iix in- ina inb ing ini inn ino inp ins inx io- ioa iob iog ioi ion ioo iop ios ipa ipb ipg ipi ipn ipo ipp ips ipx is- isa isb isg isi isn iso isp iss ixi ixn n-i naa nab nag nai nan nao nap nas nax nba nbb nbg nbi nbn nbo nbp nbs nbx nga ngb ngg ngi ngn ngo ngp ngs nia nib nig nii nin nio nip nis nix nna nnb nng nni nnn nno nnp nns no- noa nob nog noi non noo nop nos nox npa npb npg npi npn npo npp nps nsa nsb nsg nsi nsn nso nsp nss nsx o-i oaa oab oag oai oan oao oap oas oax ob- oba obb obg obi obn obo obp obs obx oga ogg ogi ogn ogo ogp ogs ogx oia oib oii oin oio oip ois on- ona onb ong oni onn ono onp ons onx oo- ooa oob oog ooi oon ooo oop oos oox op- opa opb opg opi opn opo opp ops opx os- osa osb osg osi osn oso osp oss osx ox- oxa oxb oxi oxn oxo oxx p-p paa pab pag pai pan pao pap pas pax pba pbb pbg pbi pbn pbo pbp pbs pbx pga pgb pgg pgi pgn pgo pgp pgs pia pib pig pii pin pio pip pis pix pn- pna pnb png pni pnn pno pnp pns pnx poa pob pog poi pon poo pop pos pox ppa ppb ppg ppi ppn ppo ppp pps ppx ps- psa psb psg psi psn pso psp pss psx pxg pxs saa sab sag sai san sao sap sas sax sba sbb sbg sbi sbn sbo sbp sbs sbx sga sgb sgg sgi sgn sgo sgp sgs sgx sia sib sig sii sin sio sip sis six sna snb sng sni snn sno snp sns soa sob sog soi son soo sop sos sox spa spb spg spi spn spo spp sps spx ss- ssa ssb ssg ssi ssn sso ssp sss ssx sxi sxn sxs xaa xag xan xap xas xbx xgi xgp xia xii xin xio xis xix xna xno xns xoa xog xoi xon xoo xop xos xox xpa xpb xpg xpn xpo xpp xps xsa xsb xsi xsp xss xxi xxo xxp xxx