C11112331333132311331333133313331333132313332113313231323131333132313231111   >>    C1111233133313231133133313331333133313231333211331323132313133313231323111   <<    C11112331333132311331333133313331333132313332113313231323131333132313231113   >>      C11112331333132311331333133313331333132313332113313231323131333132313231112   >>