C12121223131323223313233231323133313233313131323131133132313331323211121   >>    C1212122313132322331323323132313331323331313132313113313231333132321112   <<    C12121223131323223313233231323133313233313131323131133132313331323211123   >>      C12121223131323223313233231323133313233313131323131133132313331323211122   >>