-up ddd ddi ddl ddp dds ddu di- did dii dil dip dis diu dl- dld dli dll dlp dls dlu dpd dpi dpl dpp dps dpu dsd dsi dsl dsp dss dsu dud dui dul dup dus i-d idd idi idl idp ids idu iid iii iil iip iis iiu il- ild ili ill ilp ils ilu ipd ipi ipl ipp ips ipu is- isd isi isl isp iss isu iu- iud iui iup ius l-p ldd ldi ldl ldp lds ldu lid lii lil lip lis liu lld lli lll llp lls llu lpd lpi lpl lpp lps lpu lsd lsi lsl lsp lss lsu lud lui lul lup lus luu p-p pdd pdi pdl pdp pds pdu pid pii pil pip pis piu pld pli pll plp pls plu ppd ppi ppl ppp pps ppu ps- psd psi psl psp pss psu pud pui pul pup pus puu sdd sdi sdl sdp sds sdu sid sii sil sip sis siu sld sli sll slp sls slu spd spi spl spp sps spu ss- ssd ssi ssl ssp sss ssu sud sui sul sup sus suu udd udi udl udp uds udu uid uii uil uip uis uiu uld uli ull ulp uls ulu up- upd upi upp ups upu usd usi usl usp uss usu uus uuu