a-a a-b a-i aaa aab aad aae aag aai aap aas ab- aba abb abd abe abg abi abp abs ad- ada adb add ade adg adi adp ads aea aeb aed aee aeg aei aep aes ag- aga agb agd age agg agi agp ags ai- aia aib aid aie aig aii aip ais ap- apa apb apd ape apg api app aps as- asa asb asd ase asg asi asp ass b-p baa bab bad bae bag bai bap bas bba bbb bbd bbe bbg bbi bbp bbs bda bdb bdd bde bdg bdi bdp bds be- bea beb bed bee beg bei bep bes bga bgb bgd bge bgg bgi bgp bgs bi- bia bib bid bie big bii bip bis bpa bpb bpd bpe bpg bpi bpp bps bsa bsb bsd bse bsg bsi bsp bss daa dab dad dae dag dai dap das dba dbb dbd dbe dbg dbi dbp dbs dda ddb ddd dde ddg ddi ddp dds de- dea deb ded dee deg dei dep des dga dgd dge dgg dgi dgp dgs di- dia dib did die dig dii dip dis dpa dpb dpd dpe dpg dpi dpp dps dsa dsb dsd dse dsg dsi dsp dss eaa eab ead eae eag eai eap eas eba ebb ebd ebe ebg ebi ebp ebs ed- eda edb edd ede edg edi edp eds eea eeb eed eee eeg eep ees ega egb egd ege egg egi egp egs eia eib eid eie eig eii eip eis ep- epa epb epd epe epg epi epp eps es- esa esb esd ese esg esi esp ess g-d g-p gaa gab gad gae gag gai gap gas gba gbd gbe gbg gbi gbp gbs gda gdb gdd gde gdi gdp gds ge- gea geb ged gee geg gei gep ges gga ggb ggd ggg ggi ggp ggs gia gib gid gie gig gii gip gis gpa gpb gpd gpe gpg gpi gpp gps gsa gsb gsd gse gsg gsi gsp gss i-d ia- iaa iab iad iae iag iai iap ias iba ibb ibd ibe ibg ibi ibp ibs ida idb idd ide idg idi idp ids ie- iea ied iee ieg iei iep ies iga igb igd ige igg igi igp igs iia iib iid iie iii iip iis ipa ipb ipd ipe ipg ipi ipp ips is- isa isb isd ise isg isi isp iss p-p paa pab pad pae pag pai pap pas pba pbb pbd pbe pbg pbi pbp pbs pda pdb pdd pde pdg pdi pdp pds pea peb ped pee peg pei pep pes pga pgb pgd pge pgg pgi pgp pgs pia pib pid pie pig pii pip pis ppa ppb ppd ppe ppg ppi ppp pps ps- psa psb psd pse psg psi psp pss saa sab sad sae sag sai sap sas sba sbb sbd sbe sbg sbi sbp sbs sda sdb sdd sde sdg sdi sdp sds se- sea seb sed see seg sei sep ses sga sgb sgd sge sgg sgi sgp sgs sia sib sid sie sig sii sip sis spa spb spd spe spg spi spp sps ss- ssa ssb ssd sse ssg ssi ssp sss