C1212121231123232233131323223313233313233313223313231133132322132322131   >>    C121212123112323223313132322331323331323331322331323113313232213232213   <<    C1212121231123232233131323223313233313233313223313231133132322132322133   >>      C1212121231123232233131323223313233313233313223313231133132322132322132   >>