SELECT season FROM table_name_68 WHERE south = "esc holzkirchen" AND west = "esv buchloe" AND north = "ehc bayreuth"
CREATE TABLE table_name_68 (season VARCHAR, north VARCHAR, south VARCHAR, west VARCHAR)
esc holzkirchen ทางใต้, esv buchloe ตะวันตก และ ehc bayreuth ไปทางเหนือมีฤดูกาลอะไร
What season has esc holzkirchen south, esv buchloe west, and ehc bayreuth north?