B331133131323131133132233133313231333132233132313331323132313121212131   >>    B33113313132313113313223313331323133313223313231333132313231312121213   <<    B331133131323131133132233133313231333132233132313331323132313121212133   >>      B331133131323131133132233133313231333132233132313331323132313121212132   >>