w-w-w-w- e-e-e-i o w-w-w-w- w-w-w-w- w-w-w-w- e-e-e-i o w-w-w-w- w-w-w-w- w--t y t t- t - t y t t- t-t t y t u- u-u u-y t w--t y t t- t - t y t t- t - t y t u- u-u u-y t w--t y t t- t - t y t t- t-t t y t u- u-u u-y t w--t y t t- t - t y t t- t - t y t u- u-u u-y t-- s-p o s- p o s-p o--- u o u p- u u u u-y t-- s-p o s- p o s-p o--- u o u p- u u u u-y t r---- i i i i i i i- u t--- e-e-e-i o w-w-w-w- w-w-w-w- w-w-w-w- e-e-e-i o w-w-w-w- w-w-w-w- w--t y t t- t - t y t t- t-t t y t u- u-u u-y t w--t y t t- t - t y t t- t - t y t u- u-u u-y t-- s-p o s- p o s-p o--- u o u p- u u u u-y t r---- i i i i i i i- u t--- e-e-e-i o w-w-w-w- w-w-w-w- e---o f--- d s p o---- w---- o f--- d s p o---- w---- e---o f--- d s p o---- w---- o f--- d s p o---- w---- t---w u--- y t e 0