C313212111113331323312111133133313331333133313331333133313231323221321   >>    C31321211111333132331211113313331333133313331333133313331323132322132   <<    C313212111113331323312111133133313331333133313331333133313231323221323   >>      C313212111113331323312111133133313331333133313331333133313231323221322   >>