O método chama -se fechamento por coluna e se sair qualquer combina parecida com esta ,você terá esta garantia
1,
color: yellow; background-image: initial; background-origin: initial;">2,3.4,5,6,7,8,9,10,11,13,15,17,19
1,2,3,4,5,6,7,8,9,12,14,16,18,20,21
1,2,3,4,5,6,7,8,9,10,12,14,16,18,20
1,2,3,4,5,6,7,8,9,10,12,15,17,19,21
1,2,3,4,5,6,7,8,9,10,13,14,17,18,20
1,2,3,4,5,6,7,8,9,10,13,15,16,19,21
1,2,3,4,5,6,7,8,9,11,12,14,17,19,21
1,2,3,4,5,6,7,8,9,11,12,15,16,18,20
1,2,3,4,5,6,7,8,9,11,13,14,16,18,21
1,2,3,4,5,6,7,8,9,11,13,15,17,19,20
1,
color: yellow; background-image: initial; background-origin: initial;">2,3.4,5,6,7,8,9,10,11,13,15,17,19
1,2,3,4,5,6,7,8,9,12,14,16,18,20,21
1,2,3,4,5,6,7,8,9,10,12,14,16,18,20
1,2,3,4,5,6,7,8,9,10,12,15,17,19,21
1,2,3,4,5,6,7,8,9,10,13,14,17,18,20
1,2,3,4,5,6,7,8,9,10,13,15,16,19,21
1,2,3,4,5,6,7,8,9,11,12,14,17,19,21
1,2,3,4,5,6,7,8,9,11,12,15,16,18,20
1,2,3,4,5,6,7,8,9,11,13,14,16,18,21
1,2,3,4,5,6,7,8,9,11,13,15,17,19,20