C11112331312111112111133132313331333133313232212111113331333131113232321   >>    C1111233131211111211113313231333133313331323221211111333133313111323232   <<    C11112331312111112111133132313331333133313232212111113331333131113232323   >>      C11112331312111112111133132313331333133313232212111113331333131113232322   >>