B33113313132313113313223313331323133313223313231333133313331211113313222122121   >>    B3311331313231311331322331333132313331322331323133313331333121111331322212212   <<    B33113313132313113313223313331323133313223313231333133313331211113313222122123   >>      B33113313132313113313223313331323133313223313231333133313331211113313222122122   >>