C12313211232233312111111312111133133313331323133323232322321323321   >>    C1231321123223331211111131211113313331333132313332323232232132332   <<    C12313211232233312111111312111133133313331323133323232322321323323   >>      C12313211232233312111111312111133133313331323133323232322321323322   >>