[18]-[18]-[17]-[17]- [1^]-[1^]-[16]-[16]- [1%]-[1%]-[15]-[15]- [1$]-[1$]-[14]-[14]- 1-8 8 - 8- 1-8 8 - 8- 1-8 8 - 8- 1-8 8 - 8- [1s]-s 1 a s 1- [1s]-s 1 a s 1- [1o] - 1 1-- 1 - :q :r-:t- [1s]-s 1 a s 1- [1s]-s 1 a s 1- [1o] - 1 1-- 1 - 1 2-3- [4p]-p O p-4- [4p]-O p-O p O [4p] s-4 4-- 4 - 4 3 o [2p]- [1s] s-a 1-s- [1s] s - s-o o 1 - 1 1-- 1 - 1 1-[!o] 2 [@P]-P P - P- [1s] o---1 o [@P]-P-P P - [1s]---- [@P]-[@P]-[@P]-[@P]- [1s]-I-I I - o i - Y y - [18]-[18]-[17]-[17]- [1^]-[1^]-[16]-[16]- [1%]-[1%]-[15]-[15]- [1$]-[1$]-[14]-[14]- [38]