C11111333133313232233133313331333133313231312111133132311213232233312321   >>    C1111133313331323223313331333133313331323131211113313231121323223331232   <<    C11111333133313232233133313331333133313231312111133132311213232233312323   >>      C11111333133313232233133313331333133313231312111133132311213232233312322   >>