ddd ddi ddo ddp ddt di- did dii dio dip dit div dod doi doo dop dot dov dpd dpi dpo dpp dpt dpv dtd dti dto dtp dtt dtv dvd dvi dvp dvt i-d i-v idd idi ido idp idt idv iid iii iio iip iit io- iod ioi ioo iop iot iov ipd ipi ipo ipp ipt ipv itd iti ito itp itt itv ivd ivi ivo ivp ivt ivv o-i odd odi odo odp odt odv oid oii oio oip oit oiv oo- ood ooi ooo oop oot oov op- opd opi opo opp opt opv ot- otd oti oto otp ott otv ov- ovd ovi ovo ovp ovv p-p pdd pdi pdo pdp pdt pdv pid pii pio pip pit piv pod poi poo pop pot pov ppd ppi ppo ppp ppt ppv pt- ptd pti pto ptp ptt ptv pvd pvi pvo pvp pvt pvv tdd tdi tdo tdp tdt tdv tid tii tio tip tit tiv to- tod toi too top tot tov tpd tpi tpo tpp tpt tpv ttd tti tto ttp ttt ttv tvd tvi tvo tvp tvt vdd vdi vdo vdp vdt vdv vi- vid vii vio vip vit viv vod voi voo vop vot vov vpd vpi vpo vpp vpt vti vto vtt vtv vvi vvo vvt vvv