bnuso cnusoo dnus enuso fnusoo

0dvsoo 1dvs 2dvso 3dvsoo 4dvs

p4vs q4vso r4vsoo s4vs t4vso

evwso fvwsoo gvws hvwso ivwsoo

3lxsoo 4lxs 5lxso 6lxsoo 7lxs