C11111333133313232233133313331333133112111112113313231333131313112321   >>    C1111133313331323223313331333133313311211111211331323133313131311232   <<    C11111333133313232233133313331333133112111112113313231333131313112323   >>      C11111333133313232233133313331333133112111112113313231333131313112322   >>