o-o-o-o- o o o o o-o- o-o-o-o- o---- p-p-p-p o o----o o o o o o-o- o---- s s s a a- a- a- a - p p-- u o o u u o o u o p---- o o o o o o i i---u u u i o i u i u- y y---- w t u u-u-y-y- t t t t t-t- t-t-t-t- y---- y-y-y-y- r---- i u i o i u u- u---w t u u-u-y-y- t t t t t-t- t-t-t-t- y---- y-y-y-y- r----i i u i o i u u- u---- s s s a a- a- a- a - p p-- u o o u u o o u o p---- o o o o o o i i---u u u u o i u i u- y---- w t u u-u-y-y- t t t t t-t- t-t-t-t- y---- y-y-y-y- r---- i u i o i u u- u---w t u u-u-y-y- t t t t t-t- t-t-t-t- y---- y-y-y-y- r----i i u i o i u u- u---- p---- p-- o-- o-- u-y- p---- p--p-- p---- o---- w t u u-u-y-y- t t t t t-t- t-t-t-t- y---- y-y-y-y- r---- i u i o i u u- u---w t u u-u-y-y- t t t t t-t- t-t-t-t- y---- y-y-y-y- r----i i u i o i u u- o-o-o-o- o o o o o- o