let a := [3,4,5]
let b := (3,4,5)
let c := {'key': 'value', 'other': 'val'}

print('>> A')
print(keys(a))
print(values(a))

print('>> B')
print(keys(b))
print(values(b))

print('>> C')
print(keys(c))
print(values(c))