/ ____________ \ / ____________ \ / ____________ \ | / ____ / ___\ | | / ____ / ___\ | | / ____ | | / 1 \/ 69 | 1 I*\/ 3 | 1 | | / 1 \/ 69 | 1 I*\/ 3 | 1 | | / 1 \/ 69 1 | |x + - 3 / - + ------ *|- - - -------| - -----------------------------------|*|x + - 3 / - + ------ *|- - + -------| - -----------------------------------|*|x + - 3 / - + ------ - -------------------| | \/ 2 18 \ 2 2 / ____________ | | \/ 2 18 \ 2 2 / ____________ | | \/ 2 18 ____________| | / ____ / ___\| | / ____ / ___\| | / ____ | | / 1 \/ 69 | 1 I*\/ 3 || | / 1 \/ 69 | 1 I*\/ 3 || | / 1 \/ 69 | | 3*3 / - + ------ *|- - - -------|| | 3*3 / - + ------ *|- - + -------|| | 3*3 / - + ------ | \ \/ 2 18 \ 2 2 // \ \/ 2 18 \ 2 2 // \ \/ 2 18 /