C312111333131133131323331323133112313231323223313231311233132211   >>    C31211133313113313132333132313311231323132322331323131123313221   <<    C312111333131133131323331323133112313231323223313231311233132213   >>      C312111333131133131323331323133112313231323223313231311233132212   >>