/ 2 3 4\ -a*(-1 + a)*\1 + a + a + a + a /
/ ___________\ / ___________\ / ___________\ / ___________\ | ___ / ___ | | ___ / ___ | | ___ / ___ | | ___ / ___ | | 1 \/ 5 / 5 \/ 5 | | 1 \/ 5 / 5 \/ 5 | | 1 \/ 5 / 5 \/ 5 | | 1 \/ 5 / 5 \/ 5 | a*(a - 1)*|a + - - ----- + I* / - + ----- |*|a + - - ----- - I* / - + ----- |*|a + - + ----- + I* / - - ----- |*|a + - + ----- - I* / - - ----- | \ 4 4 \/ 8 8 / \ 4 4 \/ 8 8 / \ 4 4 \/ 8 8 / \ 4 4 \/ 8 8 /