C11111333133313232233133313331333132313231121133133112323221321   >>    C1111133313331323223313331333133313231323112113313311232322132   <<    C11111333133313232233133313331333132313231121133133112323221323   >>      C11111333133313232233133313331333132313231121133133112323221322   >>