# [Python 2], 73 bytes

<!-- language-all: lang-python -->

    lambda s:1 in[len(set(s[i::n]for i in range(n)))for n in range(2,len(s))]

[Try it online!][TIO-jz88n8fw]

[Python 2]: https://docs.python.org/2/
[TIO-jz88n8fw]: https://tio.run/##jZCxasMwEIb3PMWFDLbAHZqlNNCtlKwFb2kGCZ0bYVUSJxuTp3fvKkqUTv0m69f9H9al63SJYb8OLx@r11/GasiHR3Dh5DG0Gac2n9zhEM5DJHCcA@nwiW1QSkkUbtG@@6kodV53Pc3T5bpJ5MIEQ9scj4ieibHrAJYlRiLvrd1uG3Wb6vueiJxzKSUeRkQAyDnzkb@11uM41vPvzMzwjbYMl0nOqfRFIAZRiEMkYhHNneep8FDIhVTAgi6Mhbr8/EsdyqwxnJRos3vTPmO9EF5H7GCJ5O0/dpBQj3/9Naa@fLUxzrMx0pbHyyPk1@8EjVq/AQ "Python 2 – Try It Online"