C1212121231123232233131323223313233313231323222313231323133312321   >>    C121212123112323223313132322331323331323132322231323132313331232   <<    C1212121231123232233131323223313233313231323222313231323133312323   >>      C1212121231123232233131323223313233313231323222313231323133312322   >>