C1111233131211111211113313133313331323133313231323133313221322331   >>    C111123313121111121111331313331333132313331323132313331322132233   <<    C1111233131211111211113313133313331323133313231323133313221322333   >>      C1111233131211111211113313133313331323133313231323133313221322332   >>