C1111233133313231133133313133313331323133313221211113313132322331111   >>    C111123313331323113313331313331333132313331322121111331313232233111   <<    C1111233133313231133133313133313331323133313221211113313132322331113   >>      C1111233133313231133133313133313331323133313221211113313132322331112   >>