B23112323331323132313223313331323331323223313231323133313331323121   >>    B2311232333132313231322331333132333132322331323132313331333132312   <<    B23112323331323132313223313331323331323223313231323133313331323123   >>      B23112323331323132313223313331323331323223313231323133313331323122   >>