B331133131323131133132233133313233313331323133211331333133313331333132312112121   >>    B33113313132313113313223313331323331333132313321133133313331333133313231211212   <<    B331133131323131133132233133313233313331323133211331333133313331333132312112123   >>      B331133131323131133132233133313233313331323133211331333133313331333132312112122   >>