verry odd output in cloud ide:

pattern(11)

gives:

1110987654321
109876543210
9876543210-1
876543210-1-2
76543210-1-2-3
6543210-1-2-3-4
543210-1-2-3-4-5
43210-1-2-3-4-5-6
3210-1-2-3-4-5-6-7
210-1-2-3-4-5-6-7-8
10-1-2-3-4-5-6-7-8-9

i don't see where the dashes come from