B331133131323131133132233133313233313233211331333133313331313231333132313221231   >>    B33113313132313113313223313331323331323321133133313331333131323133313231322123   <<    B331133131323131133132233133313233313233211331333133313331313231333132313221233   >>      B331133131323131133132233133313233313233211331333133313331313231333132313221232   >>