t r e [2r] r r [2r] e W [3e] - t r e [2r] r r [4r] t y [3u] - [5o] i u [2i] - [4i] u y [3u] - e r t [2y]-e [@Y]-r [3u]--- 3 - 2 - [3e]-r t-y u-p-u t [2y]--- 2 - 2 - [4w]-e r-t y-o-t y [3u]--- 2 - 2 - [3e]-r t-y u-p-y u [2i]---- t y [3u] - [@e] - @ - [2W] - [3e]