C231311112223313112113313231111331322331323133313113313233313221311   >>    C23131111222331311211331323111133132233132313331311331323331322131   <<    C231311112223313112113313231111331322331323133313113313233313221313   >>      C231311112223313112113313231111331322331323133313113313233313221312   >>