B331133131323131133132233133313132313231313331333133313232322121   >>    B33113313132313113313223313331313231323131333133313331323232212   <<    B331133131323131133132233133313132313231313331333133313232322123   >>      B331133131323131133132233133313132313231313331333133313232322122   >>