C1212121231123232233131323223313233313231323222313231323133311231   >>    C121212123112323223313132322331323331323132322231323132313331123   <<    C1212121231123232233131323223313233313231323222313231323133311233   >>      C1212121231123232233131323223313233313231323222313231323133311232   >>