C111113331333132322331333133313331333132313121111331311121331111   >>    C11111333133313232233133313331333133313231312111133131112133111   <<    C111113331333132322331333133313331333132313121111331311121331113   >>      C111113331333132322331333133313331333132313121111331311121331112   >>