C1212121231123232233131323223313231323331323121133132313231333112331   >>    C121212123112323223313132322331323132333132312113313231323133311233   <<    C1212121231123232233131323223313231323331323121133132313231333112333   >>      C1212121231123232233131323223313231323331323121133132313231333112332   >>