text: three position where 0 appears
code: if ( i == 0 && j == 2 ) System . out . print ( "0 ▁ " ) ; else if ( i == 1 && j == 0 ) System . out . print ( "0 ▁ " ) ; else if ( i == 2 && j == 1 ) System . out . print ( "0 ▁ " ) ;