-er ddd dde ddh ddi ddp ddr de- ded dee deh dei dep der dh- dhd dhe dhh dhi dhp dhr di- did die dih dii dip dir dpd dpe dph dpi dpp dpr drd dre dri drp drr ed- edd ede edh edi edp edr eed eee eep eer ehd ehe ehh ehi ehp ehr eid eie eii eip eir ep- epd epe eph epi epp epr erd ere erh eri erp err h-i hdd hde hdh hdi hdp hdr he- hed hee heh hei hep her hhd hhe hhh hhi hhp hhr hid hie hih hii hip hir hpd hpe hph hpi hpp hpr hr- hrd hre hrh hri hrp hrr i-d idd ide idh idi idp idr ie- ied iee iei iep ier ihd ihe ihh ihi ihp ihr iid iie iih iii iip iir ipd ipe ipi ipp ipr ir- ird ire iri irp irr p-p pdd pde pdh pdi pdp pdr ped pee peh pei pep per phd phe phi php phr pid pie pih pii pip pir ppd ppe pph ppi ppp ppr prd pre prh pri prp prr rdd rde rdh rdi rdp rdr re- red ree reh rei rep rer rh- rhd rhe rhh rhi rhp rhr rid rie rih rii rip rir rpd rpe rph rpi rpp rpr rrd rrh rri rrp rrr