C1111133313331323223313331333133313112331322121111331323133313113321   >>    C111113331333132322331333133313331311233132212111133132313331311332   <<    C1111133313331323223313331333133313112331322121111331323133313113323   >>      C1111133313331323223313331333133313112331322121111331323133313113322   >>