B33113313132313113313223313331323133313223313231333133313311231211111123332221   >>    B3311331313231311331322331333132313331322331323133313331331123121111112333222   <<    B33113313132313113313223313331323133313223313231333133313311231211111123332223   >>      B33113313132313113313223313331323133313223313231333133313311231211111123332222   >>