Part 2

There are 525152 arrangements

• 1 → ???,###????,###????,###????,###????,###
• 16384 → ??,??,?##,?,??,??,?##,?,??,??,?##,?,??,??,?##,?,??,??,?##
• 1 → ?#?#?#?#?#?#?#???#?#?#?#?#?#?#???#?#?#?#?#?#?#???#?#?#?#?#?#?#???#?#?#?#?#?#?#?
• 16 → ????,#,#,?????,#,#,?????,#,#,?????,#,#,?????,#,#
• 2500 → ????,######,#####,?????,######,#####,?????,######,#####,?????,######,#####,?????,######,#####
• 506250 → ?###??????????###??????????###??????????###??????????###????????

Part 1

There are 21 arrangements

• 1 → ???,###
• 4 → ??,??,?##
• 1 → ?#?#?#?#?#?#?#?
• 1 → ????,#,#
• 4 → ????,######,#####
• 10 → ?###????????