B33113313132313113313223313331323133313223313231333133313211232322122211   >>    B3311331313231311331322331333132313331322331323133313331321123232212221   <<    B33113313132313113313223313331323133313223313231333133313211232322122213   >>      B33113313132313113313223313331323133313223313231333133313211232322122212   >>