ddd ddi ddl ddp dds di- did dii dil dip dis dl- dld dli dll dlp dls dpd dpi dpl dpp dps dsd dsi dsl dsp dss i-d idd idi idl idp ids iid iii iil iip iis il- ild ili ill ilp ils ipd ipi ipl ipp ips is- isd isi isl isp iss l-p ldd ldi ldl ldp lds lid lii lil lip lis lld lli lll llp lls lpd lpi lpl lpp lps lsd lsi lsl lsp lss p-p pdd pdi pdl pdp pds pid pii pil pip pis pld pli pll plp pls ppd ppi ppl ppp pps ps- psd psi psl psp pss sdd sdi sdl sdp sds sid sii sil sip sis sld sli sll slp sls spd spi spl spp sps ss- ssd ssi ssl ssp sss