ddd dde ddf ddi ddo ddp dds de- ded dee def dei deo dep des dfd dfe dff dfi dfo dfp dfs di- did die dif dii dio dip dis dod doe dof doi doo dop dos dpd dpe dpf dpi dpo dpp dps dsd dse dsf dsi dso dsp dss ed- edd ede edf edi edo edp eds eed eee eef eeo eep ees ef- efd efe eff efi efo efp efs eid eie eif eii eio eip eis eo- eod eoe eof eoi eoo eop eos ep- epd epe epf epi epo epp eps es- esd ese esf esi eso esp ess fdd fde fdf fdi fdo fdp fds fed fee fef fei feo fep fes ffd ffe fff ffi ffo ffp ffs fid fie fif fii fip fis foe fof foi foo fop fos fpd fpe fpi fpo fpp fps fsd fse fsf fsi fso fsp fss i-d i-f idd ide idf idi ido idp ids ie- ied iee ief iei iep ies ifd ife iff ifi ifo ifp ifs iid iie iif iii iio iip iis io- iod ioe iof ioi ioo iop ios ipd ipe ipf ipi ipo ipp ips is- isd ise isf isi iso isp iss o-i odd ode odf odi odo odp ods oed oee oef oei oeo oep oes of- ofd ofe off ofi ofo ofp ofs oid oie oif oii oio oip ois oo- ood oof ooi ooo oop oos op- opd ope opf opi opo opp ops os- osd ose osf osi oso osp oss p-p pdd pde pdf pdi pdo pdp pds ped pee pef pei peo pep pes pfd pfe pff pfi pfo pfp pfs pid pie pif pii pio pip pis pod poe pof poi poo pop pos ppd ppe ppf ppi ppo ppp pps ps- psd pse psf psi pso psp pss sdd sde sdf sdi sdo sdp sds se- sed see sef sei seo sep ses sfd sfe sff sfi sfo sfp sfs sid sie sif sii sio sip sis sod soe sof soi soo sop sos spd spe spf spi spo spp sps ss- ssd sse ssf ssi sso ssp sss