C231311112223313112113313231111331322331323133313233313231323221233131   >>    C23131111222331311211331323111133132233132313331323331323132322123313   <<    C231311112223313112113313231111331322331323133313233313231323221233133   >>      C231311112223313112113313231111331322331323133313233313231323221233132   >>