B331133131323131133132233133313231333132233132313331333131122322221   >>    B33113313132313113313223313331323133313223313231333133313112232222   <<    B331133131323131133132233133313231333132233132313331333131122322223   >>      B331133131323131133132233133313231333132233132313331333131122322222   >>