B331133131323131133132233133313231323331323223313331333131312121   >>    B33113313132313113313223313331323132333132322331333133313131212   <<    B331133131323131133132233133313231323331323223313331333131312123   >>      B331133131323131133132233133313231323331323223313331333131312122   >>