C231311112223313112113313231111331322331323133313233313232233132223221   >>    C23131111222331311211331323111133132233132313331323331323223313222322   <<    C231311112223313112113313231111331322331323133313233313232233132223223   >>      C231311112223313112113313231111331322331323133313233313232233132223222   >>