B33113313132313113313223313331323133313223313231333133313231323222311231211   >>    B3311331313231311331322331333132313331322331323133313331323132322231123121   <<    B33113313132313113313223313331323133313223313231333133313231323222311231213   >>      B33113313132313113313223313331323133313223313231333133313231323222311231212   >>