C11111211113313112113313331333132313331322121111113313232233221   >>    C1111121111331311211331333133313231333132212111111331323223322   <<    C11111211113313112113313331333132313331322121111113313232233223   >>      C11111211113313112113313331333132313331322121111113313232233222   >>