B331133131323131133132233133313231323331323323133313331323211331323223312121   >>    B33113313132313113313223313331323132333132332313331333132321133132322331212   <<    B331133131323131133132233133313231323331323323133313331323211331323223312123   >>      B331133131323131133132233133313231323331323323133313331323211331323223312122   >>