B331133131323131133132233133313231333132212113313331333132322231321121   >>    B33113313132313113313223313331323133313221211331333133313232223132112   <<    B331133131323131133132233133313231333132212113313331333132322231321123   >>      B331133131323131133132233133313231333132212113313331333132322231321122   >>