C x2

C x2C x2C x2C x2
C x2C x2C x2C x2C x2C x2C x2C x2
C x2C x2C x2C x2C x2C x2C x2C x2C x2C x2C x2C x2
C x2C x2C x2C x2C x2C x2C x2C x2C x2C x2C x2C x2C x2C x2C x2C x2
C x2C x2C x2C x2C x2C x2C x2C x2