ddd ddi ddo ddr ddu di- did dii dio dir diu dod doi doo dor dou drd dri dro drr dru dud dui duo dur i-d idd idi ido idr idu iid iii iio iir iiu io- iod ioi ioo ior iou ir- ird iri iro irr iru iu- iud iui iur o-i odd odi odo odr odu oid oii oio oir oiu oo- ood ooi ooo oor or- ord ori oro orr oru ou- oud oui ouo our rdd rdi rdo rdr rdu rid rii rio rir rod roi roo ror rou rrd rri rrr rru rud rui ruo rur ruu udd udi udo udr udu uid uii uio uir uiu uod uoo uor ur- urd uri uro urr uru uur uuu