B331133131323131133132233133313231323331323331313233313331323133313223312121   >>    B33113313132313113313223313331323132333132333131323331333132313331322331212   <<    B331133131323131133132233133313231323331323331313233313331323133313223312123   >>      B331133131323131133132233133313231323331323331313233313331323133313223312122   >>