/ 2/3 3 ____\ / 2/3 3 ____ ___ 2/3 3 ____\ / 2/3 3 ____ ___ 2/3 3 ____\ | 5 *\/ 11 | / ____\ / ____\ | 5 *\/ 11 I*\/ 3 *5 *\/ 11 | | 5 *\/ 11 I*\/ 3 *5 *\/ 11 | |x - -----------|*\x + I*\/ 15 /*\x - I*\/ 15 /*|x + ----------- + -------------------|*|x + ----------- - -------------------| \ 5 / \ 10 10 / \ 10 10 /