C11111211113313112113313331333133313133313232233132233131333131232321   >>    C1111121111331311211331333133313331313331323223313223313133313123232   <<    C11111211113313112113313331333133313133313232233132233131333131232323   >>      C11111211113313112113313331333133313133313232233132233131333131232322   >>