Accordion

long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings long sequence of connected pen drawings