3-3-3-2--- 3-3-3-2--- [3u]-[3t]-[3r]-[2e]--- [3u]-[3t]-[3e]-[2r]--- [3u]-[3t]-[3r]-[2e]--- [3u]-[3t]-[3r]-[2t] r e-- [3u]-[3t]-[3r]-[2e]--- [3u]-[3t]-[3e]-[2r]--- [3u]-[3t]-[3r]-[2e]--- [3u]-[3t]-[3r]-[2t] r e - w e---3-3 t [3e] r [3t]--y t [2r]--e r [3t]-y-u-[2y]--e r [3t]--y t [2r]-e - w [3e]---3-3-[3e] r [3t]--y t [2r]--e r [3t]-y-u-[2y]--e r [3t]-y-u-[2y]-t-r- [3t] r e [2w]-r [3e]-3-3- [3u]-[3t]-[3r]-[2e]--- [3u]-[3t]-[3e]-[2r]--- [3u]-[3t]-[3r]-[2e]--- [3u]-[3t]-[3r]-[2t] r e - r e---3-3-3- 3