How to split a large text without space into blocks of 2, 3, 4, 5, …. letters with a spreadsheet.
• Copy the text in A1.
• In A10 type 1.
• In A11 type 6 (if you need blocks of 5).
• Select A10 and A11 and copy vertically down to NbChar/5.
• In B10 write: “=STXT($A$1;A10;2)”.
• Copy vertically.
• C10: “=B10”.
• C11: “=CONCATENER(C10;” “;B11)”.
• Select C11 and extend down.
• At the bottom, in the last cell, you have the text divided in blocks.