a-a a-b a-i a-t aaa aab aae aag aai aan aap aat ab- aba abb abe abg abi abn abp abt aea aeb aee aeg aei aen aep aet ag- aga agb age agg agi agn agp agt ai- aia aib aie aig aii ain aip ait an- ana anb ane ang ani ann anp ant ap- apa apb ape apg api apn app apt at- ata atb ate atg ati atn atp att b-p baa bab bae bag bai ban bap bat bba bbb bbe bbg bbi bbn bbp bbt be- bea beb bee beg bei ben bep bet bga bgb bge bgg bgi bgn bgp bgt bi- bia bib bie big bii bin bip bit bna bnb bne bng bni bnn bnp bnt bpa bpb bpe bpg bpi bpn bpp bpt bta btb bte btg bti btn btp btt eaa eab eae eag eai ean eap eat eba ebb ebe ebg ebi ebn ebp ebt eea eeb eee eeg een eep eet ega egb ege egg egi egn egp egt eia eib eie eig eii ein eip eit en- ena enb ene eng eni enn enp ent ep- epa epb epe epg epi epn epp ept eta etb ete etg eti etn etp ett g-p gaa gab gae gag gai gan gap gat gba gbe gbg gbi gbn gbp gbt ge- gea geb gee geg gei gen gep get gga ggb ggg ggi ggn ggp ggt gia gib gie gig gii gin gip git gna gnb gne gni gnn gnp gnt gpa gpb gpe gpg gpi gpn gpp gpt gta gtb gte gtg gti gtn gtp gtt ia- iaa iab iae iag iai ian iap iat iba ibb ibe ibg ibi ibn ibp ibt ie- iea iee ieg iei ien iep iet iga igb ige igg igi ign igp igt iia iib iie iii iin iip iit in- ina inb ine ing ini inn inp int ipa ipb ipe ipg ipi ipn ipp ipt ita itb ite itg iti itn itp itt n-i naa nab nae nag nai nan nap nat nba nbb nbe nbg nbi nbn nbp nbt ne- nea neb nee neg nei nen nep net nga ngb nge ngg ngi ngn ngp ngt nia nib nie nig nii nin nip nit nna nnb nne nng nni nnn nnp nnt npa npb npe npg npi npn npp npt nta ntb nte ntg nti ntn ntp ntt p-p paa pab pae pag pai pan pap pat pba pbb pbe pbg pbi pbn pbp pbt pea peb pee peg pei pen pep pet pga pgb pge pgg pgi pgn pgp pgt pia pib pie pig pii pin pip pit pn- pna pnb pne png pni pnn pnp pnt ppa ppb ppe ppg ppi ppn ppp ppt pt- pta ptb pte ptg pti ptn ptp ptt taa tab tae tag tai tan tap tat tba tbb tbe tbg tbi tbn tbp tbt te- tea teb tee teg tei ten tep tet tga tgb tge tgg tgi tgn tgp tgt tia tib tie tig tii tin tip tit tna tnb tne tng tni tnn tnp tnt tpa tpb tpe tpg tpi tpn tpp tpt tta ttb tte ttg tti ttn ttp ttt