C11112331312111112111133133313331311331323212331333132213112131   >>    C1111233131211111211113313331333131133132321233133313221311213   <<    C11112331312111112111133133313331311331323212331333132213112133   >>      C11112331312111112111133133313331311331323212331333132213112132   >>