ddd ddf ddg ddi ddo ddp dds ddt dfd dff dfg dfi dfo dfp dfs dft dgd dgf dgg dgi dgp dgs dgt di- did dif dig dii dio dip dis dit dod dof dog doi doo dop dos dot dpd dpf dpg dpi dpo dpp dps dpt dsd dsf dsg dsi dso dsp dss dst dtd dtf dtg dti dto dtp dts dtt fdd fdf fdg fdi fdo fdp fds fdt ffd fff ffg ffi ffo ffp ffs fft fgd fgf fgg fgi fgp fgs fgt fid fif fig fii fip fis fit fof fog foi foo fop fos fot fpd fpg fpi fpo fpp fps fpt fsd fsf fsg fsi fso fsp fss fst ftd ftf ftg fti fto ftp fts ftt g-d g-p gdd gdf gdi gdo gdp gds gdt gfd gff gfi gfo gfp gfs gft ggd ggg ggi ggo ggp ggs ggt gid gif gig gii gio gip gis git god gof gog goi goo gop gos got gpd gpf gpg gpi gpo gpp gps gpt gsd gsf gsg gsi gso gsp gss gst gtd gtf gtg gti gto gtp gts gtt i-d i-f idd idf idg idi ido idp ids idt ifd iff ifg ifi ifo ifp ifs ift igd igf igg igi igo igp igs igt iid iif iii iio iip iis iit io- iod iof iog ioi ioo iop ios iot ipd ipf ipg ipi ipo ipp ips ipt is- isd isf isg isi iso isp iss ist itd itf itg iti ito itp its itt o-i odd odf odg odi odo odp ods odt of- ofd off ofg ofi ofo ofp ofs oft ogd ogf ogg ogi ogo ogp ogs ogt oid oif oii oio oip ois oit oo- ood oof oog ooi ooo oop oos oot op- opd opf opg opi opo opp ops opt os- osd osf osg osi oso osp oss ost ot- otd otf otg oti oto otp ots ott p-p pdd pdf pdg pdi pdo pdp pds pdt pfd pff pfg pfi pfo pfp pfs pft pgd pgf pgg pgi pgo pgp pgs pgt pid pif pig pii pio pip pis pit pod pof pog poi poo pop pos pot ppd ppf ppg ppi ppo ppp pps ppt ps- psd psf psg psi pso psp pss pst pt- ptd ptf ptg pti pto ptp pts ptt sdd sdf sdg sdi sdo sdp sds sdt sfd sff sfg sfi sfo sfp sfs sft sgd sgf sgg sgi sgo sgp sgs sgt sid sif sig sii sio sip sis sit sod sof sog soi soo sop sos sot spd spf spg spi spo spp sps spt ss- ssd ssf ssg ssi sso ssp sss sst std stf stg sti sto stp sts stt tdd tdf tdg tdi tdo tdp tds tdt tfd tff tfg tfi tfo tfp tfs tft tgf tgg tgi tgo tgp tgs tgt tid tif tig tii tio tip tis tit to- tod tof tog toi too top tos tot tpd tpf tpg tpi tpo tpp tps tpt tsd tsf tsg tsi tso tsp tss tst ttd ttf ttg tti tto ttp tts ttt