C11112331312111112111133133313331333132313233313231323132233221   >>    C1111233131211111211113313331333133313231323331323132313223322   <<    C11112331312111112111133133313331333132313233313231323132233223   >>      C11112331312111112111133133313331333132313233313231323132233222   >>