/ 7 ___ 2/7 /pi\ 7 ___ 2/7 /pi\\ / 7 ___ 2/7 /pi\ 7 ___ 2/7 /pi\\ / 7 ___ 2/7 /2*pi\ 7 ___ 2/7 /2*pi\\ / 7 ___ 2/7 /2*pi\ 7 ___ 2/7 /2*pi\\ / 7 ___ 2/7 /3*pi\ 7 ___ 2/7 /3*pi\\ / 7 ___ 2/7 /3*pi\ 7 ___ 2/7 /3*pi\\ / 7 ___ 2/7\ | \/ 7 *108 *cos|--| I*\/ 7 *108 *sin|--|| | \/ 7 *108 *cos|--| I*\/ 7 *108 *sin|--|| | \/ 7 *108 *cos|----| I*\/ 7 *108 *sin|----|| | \/ 7 *108 *cos|----| I*\/ 7 *108 *sin|----|| | \/ 7 *108 *cos|----| I*\/ 7 *108 *sin|----|| | \/ 7 *108 *cos|----| I*\/ 7 *108 *sin|----|| | \/ 7 *108 | | \7 / \7 /| | \7 / \7 /| | \ 7 / \ 7 /| | \ 7 / \ 7 /| | \ 7 / \ 7 /| | \ 7 / \ 7 /| |x - ------------|*|x + -------------------- + ----------------------|*|x + -------------------- - ----------------------|*|x + - ---------------------- + ------------------------|*|x + - ---------------------- - ------------------------|*|x + ---------------------- + ------------------------|*|x + ---------------------- - ------------------------| \ 6 / \ 6 6 / \ 6 6 / \ 6 6 / \ 6 6 / \ 6 6 / \ 6 6 /