C111123313121111121111331333132313331323132321133132313331333112132212111   >>    C11112331312111112111133133313231333132313232113313231333133311213221211   <<    C111123313121111121111331333132313331323132321133132313331333112132212113   >>      C111123313121111121111331333132313331323132321133132313331333112132212112   >>