C11112331312111112111133133313331333131333132312111113331323211232322122221   >>    C1111233131211111211113313331333133313133313231211111333132321123232212222   <<    C11112331312111112111133133313331333131333132312111113331323211232322122223   >>      C11112331312111112111133133313331333131333132312111113331323211232322122222   >>