B33113313132313113313223313331323133313231333132333133313331333132232212131   >>    B3311331313231311331322331333132313331323133313233313331333133313223221213   <<    B33113313132313113313223313331323133313231333132333133313331333132232212133   >>      B33113313132313113313223313331323133313231333132333133313331333132232212132   >>