val string_string : (Core_kernel__.Import.string, Core_kernel__.Import.bytes) t
val bigstring_string : (bigstring, Core_kernel__.Import.bytes) t
val string_bytes : (Core_kernel__.Import.string, Core_kernel__.Import.bytes) t
val bytes_bytes : (Core_kernel__.Import.bytes, Core_kernel__.Import.bytes) t
val bigstring_bytes : (bigstring, Core_kernel__.Import.bytes) t
val string_bigstring : (Core_kernel__.Import.string, bigstring) t
val bytes_bigstring : (Core_kernel__.Import.bytes, bigstring) t