B331133131323131133132233133313231333132233132313331333131313232213121   >>    B33113313132313113313223313331323133313223313231333133313131323221312   <<    B331133131323131133132233133313231333132233132313331333131313232213123   >>      B331133131323131133132233133313231333132233132313331333131313232213122   >>