C1212121231123232233131323223313233313233313223313231323211232312321   >>    C121212123112323223313132322331323331323331322331323132321123231232   <<    C1212121231123232233131323223313233313233313223313231323211232312323   >>      C1212121231123232233131323223313233313233313223313231323211232312322   >>