-up ddd ddi ddn ddp ddr ddu di- did dii din dip dir diu dnd dni dnn dnp dnr dpd dpi dpn dpp dpr dpu drd dri drn drp drr dru dud dui dun dup dur i-d idd idi idn idp idr idu iid iii iin iip iir iiu in- ind ini inn inp inr inu ipd ipi ipn ipp ipr ipu ir- ird iri irn irp irr iru iu- iud iui iup iur n-i ndd ndi ndn ndp ndr ndu nid nii nin nip nir niu nni nnn nnp nnu npd npi npn npp npr npu nrd nri nrn nrp nrr nru nud nui nun nup nur nuu p-p pdd pdi pdn pdp pdr pdu pid pii pin pip pir piu pn- pnd pni pnn pnp pnr pnu ppd ppi ppn ppp ppr ppu prd pri prn prp prr pru pud pui pun pup pur puu rdd rdi rdn rdp rdr rdu rid rii rin rip rir rnd rni rnn rnp rnr rnu rpd rpi rpn rpp rpr rpu rrd rri rrn rrp rrr rru rud rui run rup rur ruu udd udi udn udp udr udu uid uii uin uip uir uiu un- und uni unn unp unr unu up- upd upi upn upp upr upu ur- urd uri urn urp urr uru uun uur uuu